Wait job hangs longer that it should

[Ann Taraday]

If jobboard contains several job and we want to wait until they finished by running:

     for job in job_board.iterjobs():
         job.wait()

Process hangs longer than it should around 1 min:

Feb 14 11:31:53 devstack1 octavia-worker[7772]: DEBUG octavia.common.base_taskflow [-] Job get_failover_flow-0f294707-362a-4203-a803-9042469a3a8e is complete.
Feb 14 11:32:52 devstack1 octavia-worker[7772]: INFO octavia.controller.worker.v2.controller_worker [-] Successfully completed the failover for an amphora.

If wait is called only for one job at once - such delay does not appear.