broker doesn't restore machines correctly #2
Description
In cabsbroker.py:prev_machine, there was a bug in the SQL syntax that caused confirmed machines to not be given back when the same user requested another machine. I've added the correct SQL query, but in production we're still using the old query. That's because we were still dealing with the red hat "no panel" issue. We didn't want to give users the same machine if it didn't have a panel. However, since then we've updated the agent so it'll detect the no panel issue report a non-okay status to the broker. Thus, we can safely update the broker with the new query.