aaae213bf3
This adds a --strict option that can be passed in when calling the nova-manage cell_v2 discover_hosts command. When this option is used, the command will only return success if a new host has been found. In any other case it is considered a failure. Closes-Bug: #1692982 Change-Id: I942af11a3987e1edce67423c66931ad9ece65587