Nxos vxlan vtep vni netcfg fix (#23620)

* Code cleanup
Removed 'add' method from CustomNetworkConfig.  It is identical
to the one inherited from NetworkConfig

* Removed unused CustomNetworkConfig import

* Replaced
```
def get_existing(module, args):
    existing = {}
    netcfg = get_config(module)
    config = netcfg.get_section(parents)
```
with
```
netcfg = CustomNetworkConfig(indent=2, contents=get_config(module))
```
get_config returns a string, not an object in 2.3.

* Removed non-functioning get_object method in CustomNetworkConfig in favor of the
inherited method.

Added child_objs property so that expand_selection would work.  The original
verion never worked correctly as it compared NetworkConfig obj's and str's.

* Removed ShellError method in favor or new load_config method.

* Removed ShellError method in favor or new load_config method.
fixes #20260

* nxos requires a "no" statement to change mcase group.  Corrected.
Corrected changed logic.

* Corrected deleted CustomNetworkConfig import

lib/ansible/modules/network/nxos/nxos_bgp.py

@@ -549,7 +549,7 @@ def get_value(arg, config):
 
 def get_existing(module, args):
     existing = {}
-    netcfg = get_config(module)
+    netcfg = CustomNetworkConfig(indent=2, contents=get_config(module))
 
     try:
         asn_regex = '.*router\sbgp\s(?P<existing_asn>\d+).*'

lib/ansible/modules/network/nxos/nxos_bgp_af.py

@@ -539,7 +539,7 @@ def get_value(arg, config, module):
 
 def get_existing(module, args):
     existing = {}
-    netcfg = get_config(module)
+    netcfg = CustomNetworkConfig(indent=2, contents=get_config(module))
 
     try:
         asn_regex = '.*router\sbgp\s(?P<existing_asn>\d+).*'

lib/ansible/modules/network/nxos/nxos_bgp_neighbor.py

@@ -372,7 +372,7 @@ def get_custom_value(arg, config, module):
 
 def get_existing(module, args):
     existing = {}
-    netcfg = get_config(module)
+    netcfg = CustomNetworkConfig(indent=2, contents=get_config(module))
     custom = [
         'log_neighbor_changes',
         'pwd',

lib/ansible/modules/network/nxos/nxos_bgp_neighbor_af.py

@@ -503,7 +503,7 @@ def get_custom_value(arg, config, module):
 
 def get_existing(module, args):
     existing = {}
-    netcfg = get_config(module)
+    netcfg = CustomNetworkConfig(indent=2, contents=get_config(module))
 
     custom = [
         'allowas_in_max',

lib/ansible/modules/network/nxos/nxos_evpn_vni.py

@@ -174,7 +174,7 @@ def get_route_target_value(arg, config, module):
 
 def get_existing(module, args):
     existing = {}
-    netcfg = get_config(module)
+    netcfg = CustomNetworkConfig(indent=2, contents=get_config(module))
     parents = ['evpn', 'vni {0} l2'.format(module.params['vni'])]
     config = netcfg.get_section(parents)
 

lib/ansible/modules/network/nxos/nxos_gir.py

@@ -166,7 +166,6 @@ import re
 from ansible.module_utils.nxos import get_config, load_config, run_commands
 from ansible.module_utils.nxos import nxos_argument_spec, check_args
 from ansible.module_utils.basic import AnsibleModule
-from ansible.module_utils.netcfg import CustomNetworkConfig
 
 def execute_show_command(command, module, command_type='cli_show_ascii'):
     cmds = [command]

lib/ansible/modules/network/nxos/nxos_gir_profile_management.py

@@ -127,7 +127,7 @@ from ansible.module_utils.netcfg import CustomNetworkConfig
 
 def get_existing(module):
     existing = []
-    netcfg = get_config(module)
+    netcfg = CustomNetworkConfig(indent=2, contents=get_config(module))
 
     if module.params['mode'] == 'maintenance':
         parents = ['configure maintenance profile maintenance-mode']

lib/ansible/modules/network/nxos/nxos_hsrp.py

@@ -148,7 +148,6 @@ changed:
 from ansible.module_utils.nxos import get_config, load_config, run_commands
 from ansible.module_utils.nxos import nxos_argument_spec, check_args
 from ansible.module_utils.basic import AnsibleModule
-from ansible.module_utils.netcfg import CustomNetworkConfig
 
 
 

lib/ansible/modules/network/nxos/nxos_igmp_interface.py

@@ -238,7 +238,6 @@ changed:
 from ansible.module_utils.nxos import get_config, load_config, run_commands
 from ansible.module_utils.nxos import nxos_argument_spec, check_args
 from ansible.module_utils.basic import AnsibleModule
-from ansible.module_utils.netcfg import CustomNetworkConfig
 
 import re
 

lib/ansible/modules/network/nxos/nxos_igmp_snooping.py

@@ -134,7 +134,6 @@ changed:
 from ansible.module_utils.nxos import get_config, load_config, run_commands
 from ansible.module_utils.nxos import nxos_argument_spec, check_args
 from ansible.module_utils.basic import AnsibleModule
-from ansible.module_utils.netcfg import CustomNetworkConfig
 
 import re
 

lib/ansible/modules/network/nxos/nxos_install_os.py

@@ -122,7 +122,6 @@ import re
 from ansible.module_utils.nxos import get_config, load_config, run_commands
 from ansible.module_utils.nxos import nxos_argument_spec, check_args
 from ansible.module_utils.basic import AnsibleModule
-from ansible.module_utils.netcfg import CustomNetworkConfig
 
 
 def execute_show_command(command, module, command_type='cli_show_ascii'):

lib/ansible/modules/network/nxos/nxos_interface.py

@@ -169,7 +169,6 @@ changed:
 from ansible.module_utils.nxos import get_config, load_config, run_commands
 from ansible.module_utils.nxos import nxos_argument_spec, check_args
 from ansible.module_utils.basic import AnsibleModule
-from ansible.module_utils.netcfg import CustomNetworkConfig
 
 
 

lib/ansible/modules/network/nxos/nxos_interface_ospf.py

@@ -281,7 +281,7 @@ def get_value(arg, config, module):
 
 def get_existing(module, args):
     existing = {}
-    netcfg = get_config(module)
+    netcfg = CustomNetworkConfig(indent=2, contents=get_config(module))
     parents = ['interface {0}'.format(module.params['interface'].capitalize())]
     config = netcfg.get_section(parents)
     if 'ospf' in config:

lib/ansible/modules/network/nxos/nxos_ip_interface.py

@@ -116,7 +116,6 @@ changed:
 from ansible.module_utils.nxos import get_config, load_config, run_commands
 from ansible.module_utils.nxos import nxos_argument_spec, check_args
 from ansible.module_utils.basic import AnsibleModule
-from ansible.module_utils.netcfg import CustomNetworkConfig
 
 import re
 

lib/ansible/modules/network/nxos/nxos_ntp.py

@@ -130,7 +130,6 @@ changed:
 from ansible.module_utils.nxos import get_config, load_config, run_commands
 from ansible.module_utils.nxos import nxos_argument_spec, check_args
 from ansible.module_utils.basic import AnsibleModule
-from ansible.module_utils.netcfg import CustomNetworkConfig
 
 import re
 

lib/ansible/modules/network/nxos/nxos_ntp_auth.py

@@ -128,7 +128,6 @@ changed:
 from ansible.module_utils.nxos import get_config, load_config, run_commands
 from ansible.module_utils.nxos import nxos_argument_spec, check_args
 from ansible.module_utils.basic import AnsibleModule
-from ansible.module_utils.netcfg import CustomNetworkConfig
 
 import re
 

lib/ansible/modules/network/nxos/nxos_ntp_options.py

@@ -109,7 +109,6 @@ changed:
 from ansible.module_utils.nxos import get_config, load_config, run_commands
 from ansible.module_utils.nxos import nxos_argument_spec, check_args
 from ansible.module_utils.basic import AnsibleModule
-from ansible.module_utils.netcfg import CustomNetworkConfig
 
 
 import re

lib/ansible/modules/network/nxos/nxos_ospf_vrf.py

@@ -239,7 +239,7 @@ def get_value(arg, config, module):
 
 def get_existing(module, args):
     existing = {}
-    netcfg = get_config(module)
+    netcfg = CustomNetworkConfig(indent=2, contents=get_config(module))
     parents = ['router ospf {0}'.format(module.params['ospf'])]
 
     if module.params['vrf'] != 'default':

lib/ansible/modules/network/nxos/nxos_pim_interface.py

@@ -192,7 +192,6 @@ changed:
 from ansible.module_utils.nxos import get_config, load_config, run_commands
 from ansible.module_utils.nxos import nxos_argument_spec, check_args
 from ansible.module_utils.basic import AnsibleModule
-from ansible.module_utils.netcfg import CustomNetworkConfig
 
 import time
 

lib/ansible/modules/network/nxos/nxos_portchannel.py

@@ -207,7 +207,7 @@ def get_portchannel_mode(interface, protocol, module, netcfg):
     if protocol != 'LACP':
         mode = 'on'
     else:
-        netcfg = get_config(module)
+        netcfg = CustomNetworkConfig(indent=2, contents=get_config(module))
         parents = ['interface {0}'.format(interface.capitalize())]
         body = netcfg.get_section(parents)
 
@@ -281,7 +281,7 @@ def get_portchannel(module, netcfg=None):
 
 def get_existing(module, args):
     existing = {}
-    netcfg = get_config(module)
+    netcfg = CustomNetworkConfig(indent=2, contents=get_config(module))
 
     interface_exist = check_interface(module, netcfg)
     if interface_exist:

lib/ansible/modules/network/nxos/nxos_rollback.py

@@ -81,7 +81,6 @@ status:
 from ansible.module_utils.nxos import nxos_argument_spec, run_commands
 from ansible.module_utils.basic import AnsibleModule
 
-
 def checkpoint(filename, module):
     commands = ['terminal dont-ask', 'checkpoint file %s' % filename]
     run_commands(module, commands)

lib/ansible/modules/network/nxos/nxos_smu.py

@@ -84,7 +84,6 @@ changed:
 from ansible.module_utils.nxos import get_config, load_config, run_commands
 from ansible.module_utils.nxos import nxos_argument_spec, check_args
 from ansible.module_utils.basic import AnsibleModule
-from ansible.module_utils.netcfg import CustomNetworkConfig
 
 import time
 import collections

lib/ansible/modules/network/nxos/nxos_snmp_community.py

@@ -103,7 +103,6 @@ changed:
 from ansible.module_utils.nxos import get_config, load_config, run_commands
 from ansible.module_utils.nxos import nxos_argument_spec, check_args
 from ansible.module_utils.basic import AnsibleModule
-from ansible.module_utils.netcfg import CustomNetworkConfig
 
 
 import re

lib/ansible/modules/network/nxos/nxos_snmp_contact.py

@@ -88,7 +88,6 @@ changed:
 from ansible.module_utils.nxos import get_config, load_config, run_commands
 from ansible.module_utils.nxos import nxos_argument_spec, check_args
 from ansible.module_utils.basic import AnsibleModule
-from ansible.module_utils.netcfg import CustomNetworkConfig
 
 
 import re

lib/ansible/modules/network/nxos/nxos_snmp_host.py

@@ -136,7 +136,6 @@ changed:
 from ansible.module_utils.nxos import get_config, load_config, run_commands
 from ansible.module_utils.nxos import nxos_argument_spec, check_args
 from ansible.module_utils.basic import AnsibleModule
-from ansible.module_utils.netcfg import CustomNetworkConfig
 
 
 import re

lib/ansible/modules/network/nxos/nxos_snmp_location.py

@@ -95,7 +95,6 @@ changed:
 from ansible.module_utils.nxos import get_config, load_config, run_commands
 from ansible.module_utils.nxos import nxos_argument_spec, check_args
 from ansible.module_utils.basic import AnsibleModule
-from ansible.module_utils.netcfg import CustomNetworkConfig
 
 
 import re

lib/ansible/modules/network/nxos/nxos_snmp_traps.py

@@ -106,7 +106,6 @@ changed:
 from ansible.module_utils.nxos import get_config, load_config, run_commands
 from ansible.module_utils.nxos import nxos_argument_spec, check_args
 from ansible.module_utils.basic import AnsibleModule
-from ansible.module_utils.netcfg import CustomNetworkConfig
 
 
 import re

lib/ansible/modules/network/nxos/nxos_snmp_user.py

@@ -117,7 +117,6 @@ changed:
 from ansible.module_utils.nxos import get_config, load_config, run_commands
 from ansible.module_utils.nxos import nxos_argument_spec, check_args
 from ansible.module_utils.basic import AnsibleModule
-from ansible.module_utils.netcfg import CustomNetworkConfig
 
 
 import re

lib/ansible/modules/network/nxos/nxos_static_route.py

@@ -136,7 +136,7 @@ def state_present(module, candidate, prefix):
 
 
 def state_absent(module, candidate, prefix):
-    netcfg = get_config(module)
+    netcfg = CustomNetworkConfig(indent=2, contents=get_config(module))
     commands = list()
     parents = 'vrf context {0}'.format(module.params['vrf'])
     invoke('set_route', module, commands, prefix)
@@ -161,7 +161,7 @@ def fix_prefix_to_regex(prefix):
 
 def get_existing(module, prefix, warnings):
     key_map = ['tag', 'pref', 'route_name', 'next_hop']
-    netcfg = get_config(module)
+    netcfg = CustomNetworkConfig(indent=2, contents=get_config(module))
     parents = 'vrf context {0}'.format(module.params['vrf'])
     prefix_to_regex = fix_prefix_to_regex(prefix)
 

lib/ansible/modules/network/nxos/nxos_switchport.py

@@ -159,7 +159,6 @@ changed:
 from ansible.module_utils.nxos import get_config, load_config, run_commands
 from ansible.module_utils.nxos import nxos_argument_spec, check_args
 from ansible.module_utils.basic import AnsibleModule
-from ansible.module_utils.netcfg import CustomNetworkConfig
 
 
 import re

lib/ansible/modules/network/nxos/nxos_udld.py

@@ -113,7 +113,6 @@ changed:
 from ansible.module_utils.nxos import get_config, load_config, run_commands
 from ansible.module_utils.nxos import nxos_argument_spec, check_args
 from ansible.module_utils.basic import AnsibleModule
-from ansible.module_utils.netcfg import CustomNetworkConfig
 
 
 import re

lib/ansible/modules/network/nxos/nxos_udld_interface.py

@@ -112,7 +112,6 @@ changed:
 from ansible.module_utils.nxos import get_config, load_config, run_commands
 from ansible.module_utils.nxos import nxos_argument_spec, check_args
 from ansible.module_utils.basic import AnsibleModule
-from ansible.module_utils.netcfg import CustomNetworkConfig
 
 
 import re

lib/ansible/modules/network/nxos/nxos_vpc.py

@@ -150,7 +150,6 @@ changed:
 from ansible.module_utils.nxos import get_config, load_config, run_commands
 from ansible.module_utils.nxos import nxos_argument_spec, check_args
 from ansible.module_utils.basic import AnsibleModule
-from ansible.module_utils.netcfg import CustomNetworkConfig
 
 def execute_show_command(command, module, command_type='cli_show'):
     if module.params['transport'] == 'cli':

lib/ansible/modules/network/nxos/nxos_vpc_interface.py

@@ -102,7 +102,6 @@ changed:
 from ansible.module_utils.nxos import get_config, load_config, run_commands
 from ansible.module_utils.nxos import nxos_argument_spec, check_args
 from ansible.module_utils.basic import AnsibleModule
-from ansible.module_utils.netcfg import CustomNetworkConfig
 
 def execute_show_command(command, module, command_type='cli_show'):
     if module.params['transport'] == 'cli':

lib/ansible/modules/network/nxos/nxos_vrf.py

@@ -124,7 +124,6 @@ import re
 from ansible.module_utils.nxos import get_config, load_config, run_commands
 from ansible.module_utils.nxos import nxos_argument_spec, check_args
 from ansible.module_utils.basic import AnsibleModule
-from ansible.module_utils.netcfg import CustomNetworkConfig
 
 def execute_show_command(command, module, command_type='cli_show'):
     transport = module.params['provider']['transport']

lib/ansible/modules/network/nxos/nxos_vrf_af.py

@@ -144,7 +144,7 @@ def get_value(arg, config, module):
 
 def get_existing(module, args):
     existing = {}
-    netcfg = get_config(module)
+    netcfg = CustomNetworkConfig(indent=2, contents=get_config(module))
 
     parents = ['vrf context {0}'.format(module.params['vrf'])]
     parents.append('address-family {0} {1}'.format(module.params['afi'],

lib/ansible/modules/network/nxos/nxos_vrf_interface.py

@@ -104,7 +104,6 @@ import re
 from ansible.module_utils.nxos import get_config, load_config, run_commands
 from ansible.module_utils.nxos import nxos_argument_spec, check_args
 from ansible.module_utils.basic import AnsibleModule
-from ansible.module_utils.netcfg import CustomNetworkConfig
 
 
 WARNINGS = []

lib/ansible/modules/network/nxos/nxos_vrrp.py

@@ -142,7 +142,6 @@ import re
 from ansible.module_utils.nxos import get_config, load_config, run_commands
 from ansible.module_utils.nxos import nxos_argument_spec, check_args
 from ansible.module_utils.basic import AnsibleModule
-from ansible.module_utils.netcfg import CustomNetworkConfig
 
 def execute_show_command(command, module, command_type='cli_show'):
     if module.params['transport'] == 'cli':

lib/ansible/modules/network/nxos/nxos_vtp_domain.py

@@ -89,7 +89,6 @@ changed:
 from ansible.module_utils.nxos import get_config, load_config, run_commands
 from ansible.module_utils.nxos import nxos_argument_spec, check_args
 from ansible.module_utils.basic import AnsibleModule
-from ansible.module_utils.netcfg import CustomNetworkConfig
 import re
 
 

lib/ansible/modules/network/nxos/nxos_vtp_password.py

@@ -106,7 +106,6 @@ changed:
 from ansible.module_utils.nxos import get_config, load_config, run_commands
 from ansible.module_utils.nxos import nxos_argument_spec, check_args
 from ansible.module_utils.basic import AnsibleModule
-from ansible.module_utils.netcfg import CustomNetworkConfig
 import re
 
 

lib/ansible/modules/network/nxos/nxos_vtp_version.py

@@ -84,7 +84,6 @@ changed:
 from ansible.module_utils.nxos import get_config, load_config, run_commands
 from ansible.module_utils.nxos import nxos_argument_spec, check_args
 from ansible.module_utils.basic import AnsibleModule
-from ansible.module_utils.netcfg import CustomNetworkConfig
 
 
 import re

lib/ansible/modules/network/nxos/nxos_vxlan_vtep.py

@@ -202,7 +202,7 @@ def get_value(arg, config, module):
 
 def get_existing(module, args):
     existing = {}
-    netcfg = get_config(module)
+    netcfg = CustomNetworkConfig(indent=2, contents=get_config(module))
 
     interface_string = 'interface {0}'.format(module.params['interface'].lower())
     parents = [interface_string]

lib/ansible/modules/network/nxos/nxos_vxlan_vtep_vni.py

@@ -217,7 +217,7 @@ def get_custom_value(arg, config, module):
 
 def get_existing(module, args):
     existing = {}
-    netcfg = get_config(module)
+    netcfg = CustomNetworkConfig(indent=2, contents=get_config(module))
 
     custom = [
         'assoc_vrf',
@@ -283,6 +283,10 @@ def state_present(module, existing, proposed, candidate):
             for peer in value:
                 commands.append('{0} {1}'.format(key, peer))
 
+        elif key == 'mcast-group' and value != existing_commands.get(key):
+            commands.append('no {0}'.format(key))
+            commands.append('{0} {1}'.format(key, value))
+
         elif value is True:
             commands.append(key)
 
@@ -422,13 +426,17 @@ def main():
         else:
             candidate = CustomNetworkConfig(indent=3)
             invoke('state_%s' % state, module, existing, proposed, candidate)
-
-            try:
-                response = load_config(module, candidate)
-                result.update(response)
-            except ShellError:
-                exc = get_exception()
-                module.fail_json(msg=str(exc))
+            result['changed'] = False
+            for k, v in proposed.items():
+                if k in existing:
+                    if existing[k] != proposed[k] or state == 'absent':
+                        result['changed'] = True
+                if k not in existing and state == 'present':
+                    result['changed'] = True
+            if module.check_mode:
+                module.exit_json(commands=candidate)
+            else:
+                load_config(module, candidate)
     else:
         result['updates'] = []