Remove dependecy testrepository
Remove dependecy testrepository

testr is part of testrepository, we invoke testr through os-testr
in Cinder and  testrepository is dpendency of os-testr, we don't
invoke testr directly, so don't need dependency testrepository.

Change-Id: Ieb0662b1ea35e12387dc12c2b2eec7c3880d9c3b

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