nxos_vrf fix (#25812)

* Fixes #25031

* Slight cleanup and add tests

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

@@ -98,7 +98,7 @@ commands:
 '''
 import re
 
-from ansible.module_utils.nxos import get_config, load_config, run_commands
+from ansible.module_utils.nxos import load_config, run_commands
 from ansible.module_utils.nxos import nxos_argument_spec, check_args
 from ansible.module_utils.basic import AnsibleModule
 
@@ -190,6 +190,7 @@ def get_vrf(vrf, module):
         return {}
 
     parsed_vrf = apply_key_map(vrf_key, vrf_table)
+    parsed_vrf['admin_state'] = parsed_vrf['admin_state'].lower()
 
     command = 'show run all | section vrf.context.{0}'.format(vrf)
     body = execute_show_command(command, module)[0]
@@ -259,13 +260,13 @@ def main():
         if proposed.get('vni'):
             if existing.get('vni') and existing.get('vni') != '':
                 commands.insert(1, 'no vni {0}'.format(existing['vni']))
-        if module.check_mode:
-            module.exit_json(changed=True, commands=commands)
-        else:
+
+        if not module.check_mode:
             load_config(module, commands)
-            results['changed'] = True
-            if 'configure' in commands:
-                commands.pop(0)
+
+        results['changed'] = True
+        if 'configure' in commands:
+            commands.pop(0)
 
     results['commands'] = commands