Add a .coveragerc to exclude tests and oslo
Add a .coveragerc to exclude tests and oslo

This is to try produce more relevant output.

Change-Id: I08ebfacf19e4975e00ab79229cc18a3b57a1002a

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