heat tests : run_tests.sh reinstate text coverage report
heat tests : run_tests.sh reinstate text coverage report

testr migration removed the text CLI summary report, so add
it back in now for easy visibility of coverage results

Change-Id: I419b1a9ea45f391a2cf623ad4431c93982ae5231

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