Add verbose log for network action handler information

lib/ansible/executor/task_executor.py

@@ -990,6 +990,9 @@ class TaskExecutor:
             handler_name = self._task.action
         elif all((module_prefix in C.NETWORK_GROUP_MODULES, self._shared_loader_obj.action_loader.has_plugin(network_action, collection_list=collections))):
             handler_name = network_action
+            display.vvvv("Using network group action {handler} for {action}".format(handler=handler_name,
+                                                                                    action=self._task.action),
+                         host=self._play_context.remote_addr)
         else:
             # use ansible.legacy.normal to allow (historic) local action_plugins/ override without collections search
             handler_name = 'ansible.legacy.normal'