fixes import statement in nxos_facts module (#21834)

trying to import from the wrong shared lib, this patch changes
network_common to connection.  Also fixes a bug found in the nxos
action plugin to detect transport

fixes #21829

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

@@ -181,7 +181,7 @@ import re
 from ansible.module_utils.nxos import run_commands
 from ansible.module_utils.nxos import nxos_argument_spec, check_args
 from ansible.module_utils.basic import AnsibleModule
-from ansible.module_utils.network_common import exec_command
+from ansible.module_utils.connection import exec_command
 from ansible.module_utils.six import iteritems
 
 

lib/ansible/plugins/action/nxos.py

@@ -99,7 +99,9 @@ class ActionModule(_ActionModule):
             self._task.args['provider'] = provider_arg
 
         # make sure a transport value is set in args
-        if self._task.args.get('transport') is None and self._task.args.get('provider').get('transport') is None:
+        transport = self._task.args.get('transport')
+        provider_transport = (self._task.args.get('provider') or {}).get('transport')
+        if all((transport is None, provider_transport is None)):
             self._task.args['transport'] = 'cli'
 
         return super(ActionModule, self).run(tmp, task_vars)