Update .coveragerc after the removal of openstack directory
Update .coveragerc after the removal of openstack directory

The openstack directory was used to keep codes from oslo-incubator,
we have retired oslo-incubator,so don't use this directory any more.

Change-Id: Iab6b2c63c183f1f01d1f9a6a2ca117a9db8db27d

phenoxim/cinder,openstack/cinder,mahak/cinder,mahak/cinder,Datera/cinder,openstack/cinder,j-griffith/cinder,j-griffith/cinder,ge0rgi/cinder,eharney/cinder,Datera/cinder,eharney/cinder,phenoxim/cinder