cloud roster: Check whether show_instance succeeded on node
cloud roster: Check whether show_instance succeeded on node

If the show_instance action failed on a node, the node's name would be
added to a list located at 'Not Actioned/Not Running' key of a
dictionary returned by the action. Ensure that a target node isn't
included into that list.

saltstack/salt,saltstack/salt,saltstack/salt,saltstack/salt,saltstack/salt