New module for BGP configuration management in iosxr (#53121)

* Add iosxr_bgp module

Signed-off-by: NilashishC <nilashishchakraborty8@gmail.com>

* Remove unused code

Signed-off-by: NilashishC <nilashishchakraborty8@gmail.com>

* Remove netconf code

Signed-off-by: NilashishC <nilashishchakraborty8@gmail.com>

lib/ansible/module_utils/network/iosxr/providers/module.py

@@ -0,0 +1,62 @@
+#
+# (c) 2019, Ansible by Red Hat, inc
+# GNU General Public License v3.0+ (see COPYING or https://www.gnu.org/licenses/gpl-3.0.txt)
+#
+from ansible.module_utils.basic import AnsibleModule
+from ansible.module_utils.connection import Connection
+from ansible.module_utils.network.iosxr.providers import providers
+from ansible.module_utils._text import to_text
+
+
+class NetworkModule(AnsibleModule):
+
+    fail_on_missing_provider = True
+
+    def __init__(self, connection=None, *args, **kwargs):
+        super(NetworkModule, self).__init__(*args, **kwargs)
+
+        if connection is None:
+            connection = Connection(self._socket_path)
+
+        self.connection = connection
+
+    @property
+    def provider(self):
+        if not hasattr(self, '_provider'):
+            capabilities = self.from_json(self.connection.get_capabilities())
+
+            network_os = capabilities['device_info']['network_os']
+            network_api = capabilities['network_api']
+
+            if network_api == 'cliconf':
+                connection_type = 'network_cli'
+
+            cls = providers.get(network_os, self._name, connection_type)
+
+            if not cls:
+                msg = 'unable to find suitable provider for network os %s' % network_os
+                if self.fail_on_missing_provider:
+                    self.fail_json(msg=msg)
+                else:
+                    self.warn(msg)
+
+            obj = cls(self.params, self.connection, self.check_mode)
+
+            setattr(self, '_provider', obj)
+
+        return getattr(self, '_provider')
+
+    def get_facts(self, subset=None):
+        try:
+            self.provider.get_facts(subset)
+        except Exception as exc:
+            self.fail_json(msg=to_text(exc))
+
+    def edit_config(self, config_filter=None):
+        current_config = self.connection.get_config(flags=config_filter)
+        try:
+            commands = self.provider.edit_config(current_config)
+            changed = bool(commands)
+            return {'commands': commands, 'changed': changed}
+        except Exception as exc:
+            self.fail_json(msg=to_text(exc))