Fixes F5 conventions and adds features (#39189)

This patch fixes a number of convention changes in F5 modules.
Additionally, it adds some features to bigip vlan and other modules

lib/ansible/modules/network/f5/bigip_vlan.py

@@ -18,7 +18,7 @@ module: bigip_vlan
 short_description: Manage VLANs on a BIG-IP system
 description:
   - Manage VLANs on a BIG-IP system
-version_added: "2.2"
+version_added: 2.2
 options:
   description:
     description:
@@ -71,6 +71,17 @@ options:
         specifies that the default CMP hash uses L4 ports.
       - When creating a new VLAN, if this parameter is not specified, the default
         of C(default) is used.
+    choices:
+      - default
+      - destination-address
+      - source-address
+      - dst-ip
+      - src-ip
+      - dest
+      - destination
+      - source
+      - dst
+      - src
     version_added: 2.5
   dag_tunnel:
     description:
@@ -82,6 +93,9 @@ options:
         of C(outer) is used.
       - This parameter is not supported on Virtual Editions of BIG-IP.
     version_added: 2.5
+    choices:
+      - inner
+      - outer
   dag_round_robin:
     description:
       - Specifies whether some of the stateless traffic on the VLAN should be
@@ -187,27 +201,22 @@ from ansible.module_utils.basic import AnsibleModule
 from ansible.module_utils.basic import env_fallback
 
 try:
-    # Sideband repository used for dev
     from library.module_utils.network.f5.bigip import HAS_F5SDK
     from library.module_utils.network.f5.bigip import F5Client
     from library.module_utils.network.f5.common import F5ModuleError
     from library.module_utils.network.f5.common import AnsibleF5Parameters
     from library.module_utils.network.f5.common import cleanup_tokens
-    from library.module_utils.network.f5.common import fqdn_name
     from library.module_utils.network.f5.common import f5_argument_spec
     try:
         from library.module_utils.network.f5.common import iControlUnexpectedHTTPError
     except ImportError:
         HAS_F5SDK = False
-    HAS_DEVEL_IMPORTS = True
 except ImportError:
-    # Upstream Ansible
     from ansible.module_utils.network.f5.bigip import HAS_F5SDK
     from ansible.module_utils.network.f5.bigip import F5Client
     from ansible.module_utils.network.f5.common import F5ModuleError
     from ansible.module_utils.network.f5.common import AnsibleF5Parameters
     from ansible.module_utils.network.f5.common import cleanup_tokens
-    from ansible.module_utils.network.f5.common import fqdn_name
     from ansible.module_utils.network.f5.common import f5_argument_spec
     try:
         from ansible.module_utils.network.f5.common import iControlUnexpectedHTTPError