add missing licence header
add missing licence header

Change-Id: I95d883c7c58ecba925bc6fa41d7a9491b18a55fa

rh-s/heat,rickerc/heat_audit,cwolferh/heat-scratch,miguelgrinberg/heat,srznew/heat,dragorosson/heat,pratikmallya/heat,ntt-sic/heat,varunarya10/heat,maestro-hybrid-cloud/heat,pshchelo/heat,noironetworks/heat,takeshineshiro/heat,noironetworks/heat,rickerc/heat_audit,gonzolino/heat,cwolferh/heat-scratch,openstack/heat,citrix-openstack-build/heat,dims/heat,JioCloud/heat,cryptickp/heat,pratikmallya/heat,jasondunsmore/heat,openstack/heat,NeCTAR-RC/heat,takeshineshiro/heat,dragorosson/heat,citrix-openstack-build/heat,rdo-management/heat,redhat-openstack/heat,JioCloud/heat,dims/heat,rdo-management/heat,pshchelo/heat,Triv90/Heat,varunarya10/heat,ntt-sic/heat,maestro-hybrid-cloud/heat,redhat-openstack/heat,jasondunsmore/heat,steveb/heat,srznew/heat,cryptickp/heat,miguelgrinberg/heat,Triv90/Heat,rh-s/heat,NeCTAR-RC/heat,steveb/heat,gonzolino/heat,Triv90/Heat