integration_test: declare and purge the hub queue
integration_test: declare and purge the hub queue

henrikhodne-abandoned/worker,henrikhodne-abandoned/worker,travis-ci/worker,Acidburn0zzz/worker,Acidburn0zzz/worker,Acidburn0zzz/worker,travis-ci/worker,solarce/worker,solarce/worker,travis-ci/worker,henrikhodne-abandoned/worker,solarce/worker