Comment 5 for bug 1464656

No consensus on resolution plan yet, and the theory of https://review.openstack.org/190189 being root cause for the regression hasn't been confirmed, so moving out of 6.1 to 6.1-updates. If 6.1 Ceph test at scale succeeds, this bug should be downgraded back to Medium and marked Won't Fix for 6.1.x.