Fix actions and wait in os_server_action module (#43504)

* Fix call to sdk.iterate_timeout in os_server_action

* Correct indentation for several actions in os_server_action

(cherry picked from commit d5662df695)

lib/ansible/modules/cloud/openstack/os_server_action.py

@@ -94,7 +94,7 @@ def _action_url(server_id):
 def _wait(timeout, cloud, server, action, module, sdk):
     """Wait for the server to reach the desired state for the given action."""
 
-    for count in sdk.utils._iterate_timeout(
+    for count in sdk.utils.iterate_timeout(
             timeout,
             "Timeout waiting for server to complete %s" % action):
         try: