Add more stack_resource unit tests
Add more stack_resource unit tests

Closes-bug: 1449805
Change-Id: Icd5f6b869273f724f9a5177ba513c32ac163dc80

noironetworks/heat,srznew/heat,dims/heat,gonzolino/heat,miguelgrinberg/heat,gonzolino/heat,cryptickp/heat,cryptickp/heat,noironetworks/heat,dragorosson/heat,miguelgrinberg/heat,maestro-hybrid-cloud/heat,pshchelo/heat,pratikmallya/heat,takeshineshiro/heat,pshchelo/heat,rdo-management/heat,cwolferh/heat-scratch,srznew/heat,steveb/heat,maestro-hybrid-cloud/heat,dims/heat,rdo-management/heat,jasondunsmore/heat,pratikmallya/heat,dragorosson/heat,cwolferh/heat-scratch,openstack/heat,openstack/heat,takeshineshiro/heat,rh-s/heat,steveb/heat,rh-s/heat,jasondunsmore/heat