Ceph gates notoriously run out of memory Change-Id: I5cf5cc5adf5379095ed9e3094494e65b76ff62d8
First non-trivial scenario we'll be testing in gates will be cinder + ceph. This patchset is supposed to create framework to easily add new testing scenarios. Change-Id: I6790eaf5cf3297af04a64e4169a39b6e2cd1890f