API tests should tearDown in the correct order
API tests should tearDown in the correct order

Change-Id: I1305aeb27b6fe229f7c26fa5acb8555919a62bdf

grahamhayes/designate,openstack/designate,NeCTAR-RC/designate,kiall/designate-py3,richm/designate,tonyli71/designate,richm/designate,muraliselva10/designate,openstack/designate,cneill/designate-testing,ionrock/designate,muraliselva10/designate,cneill/designate,kiall/designate-py3,muraliselva10/designate,tonyli71/designate,cneill/designate,ramsateesh/designate,tonyli71/designate,ramsateesh/designate,kiall/designate-py3,melodous/designate,melodous/designate,grahamhayes/designate,cneill/designate,openstack/designate,ionrock/designate,NeCTAR-RC/designate,melodous/designate,cneill/designate,grahamhayes/designate,ionrock/designate,kiall/designate-py3,cneill/designate,cneill/designate-testing,ramsateesh/designate,kiall/designate-py3,cneill/designate-testing,melodous/designate