fixes issue when host is defined in provider for junos (#22918)

The junos action handler was not honoring the host value in the provider
argument.  This patch will now use the provider host entry if it exists
and falls back to the inventory hostname
(cherry picked from commit cda3e001c6)

lib/ansible/plugins/action/junos.py

@@ -57,6 +57,8 @@ class ActionModule(_ActionModule):
         pc = copy.deepcopy(self._play_context)
         pc.network_os = 'junos'
 
+        pc.remote_addr = provider['host'] or self._play_context.remote_addr
+
         if self._task.action == 'junos_netconf':
             pc.connection = 'network_cli'
             pc.port = provider['port'] or self._play_context.port or 22