Load balancers in ERROR provisioning status could not be failed over.
One possible scenario where LBs go into ERROR is when services are
started before compute nodes are up on a cluster reboot:
- Octavia services are started
- Health Manager does not receive heartbeat and triggers failover
- Failover fails due to lack of availabble compute nodes to spawn
amphora VMs
Story: 2005078
Task: 29657
Change-Id: Ic4b4516cd6b2a254ea32939668c906486066da42
503e3949f8