Open Stack

So we came up with the solution of running a "management" instance of
cinder-api that nova can use to talk to cinder - but isn't exposed to
the user (i.e. it's not in the catalog, and presumably also on
darknet/10. space)

The expectation is that the volume-actions ext wouldn't be enabled on
the public instance of cinder-api, but nova could call
os-volume_actions on the management instance.

For us, this requires this patch:
https://review.openstack.org/#/c/12748/

-clayg