nxos_interface port-channel idempotence fix for mode (#44248)

Signed-off-by: Trishna Guha <trishnaguha17@gmail.com>

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

@@ -578,7 +578,11 @@ def map_config_to_obj(want, module):
                     obj['name'] = normalize_interface(interface_table.get('interface'))
                     obj['admin_state'] = interface_table.get('admin_state')
                     obj['description'] = interface_table.get('desc')
-                    obj['mode'] = interface_table.get('eth_mode')
+                    mode = interface_table.get('eth_mode')
+                    if mode == 'access':
+                        obj['mode'] = 'layer2'
+                    else:
+                        obj['mode'] = 'layer3'
 
         objs.append(obj)