When Octavia loadbalancer hangs in PENDING status, it becomes immutable
and cannot be recovered or deleted in any way.
The following admin util commmand updates the loadbalancer status to
ERROR so it can be deleted successfully, but sending an RPC message to
Octavia driver agent service.
Change-Id: I7ee1ba445ab4526ef8b2d271574319114a31d631
8352ce15b2