Clean up queues created for certain tests
Clean up queues created for certain tests

Some tests weren't cleaning the queues they created. This caused other
tests to fail because of they ran on a no clean database. The patch adds
cleanup calls that will delete those queues once the test ends.

Change-Id: Iac354c34e14783a4b9773c60efbf719c21a9f9d2

openstack/zaqar,openstack/zaqar,openstack/zaqar,openstack/zaqar