Always wait server active status on rebuild

In some cases server rebuild may take long time. While
server is in the REBUILD state, it may be not powered off yet so it is still accessible via ssh. We need to make sure it reached ACTIVE state
before starting checking availability via ssh.

Related-Prod: https://mirantis.jira.com/browse/PRODX-42996
Change-Id: Id791fceb3b89d0f2c8a34a1cc5913938b5cdfe5a
1 file changed