Updated openstack/openstack
Project: openstack/cinder  7f13e7e0fd4e84372cffa891c5470f2bb094b760

Use oslo-incubator module units

There is Cinder's version units module, that looks good. Considering
consistency with other projects like Nova, Glance, Cinder would be
better to use oslo-incubator's version.

Change-Id: I07e93e9d8a985df0f96c3e80de9c3f23bf6a0c1e