Fix utils.render_temaplate_to_file() test case name
Fix utils.render_temaplate_to_file() test case name

Change-Id: I9948beccde1c9b52b6e4507feb5cad61aaff049a

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