Update nxos_install_os module (#40102)

* Add nxos_install_os integration tests

* Update call to check timers

* Update check_ansible_timer method

* Modify network_cli integration tests

* Add timer check for nxos_install_os

* Add comments for clear_persistent_sockets

* Update connection info for tests

* More updates

* Restructure files for provider and non-provider testing

* Update env var name and add check for ISSU switchover

lib/ansible/plugins/action/nxos.py

@@ -55,6 +55,12 @@ class ActionModule(_ActionModule):
             elif self._play_context.connection == 'local':
                 self._task.args['username'] = self._play_context.connection_user
 
+        if self._task.action == 'nxos_install_os':
+            if C.PERSISTENT_COMMAND_TIMEOUT < 600 or C.PERSISTENT_CONNECT_TIMEOUT < 600:
+                msg = 'PERSISTENT_COMMAND_TIMEOUT and PERSISTENT_CONNECT_TIMEOUT'
+                msg += ' must be set to 600 seconds or higher when using nxos_install_os module'
+                return {'failed': True, 'msg': msg}
+
         if self._play_context.connection in ('network_cli', 'httpapi'):
             provider = self._task.args.get('provider', {})
             if any(provider.values()):