Use right oslo.service entry points
Use right oslo.service entry points

Use oslo.service.service entry point to generate a sample configuration
file. oslo.service library doesn't have an oslo.service entry point.

Change-Id: Ibb6872dd8e19ec15d72a174d94ca64b7aa489d36
Closes-Bug: 1468955

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