Updated openstack/openstack
Project: openstack-dev/devstack  dd1b5bb46549a145a74601d2702008a9051a7e52
null
Split up stop_nova to match start_nova

Split stop_nova into: stop_nova_compute and stop_nova_rest. This is
needed to support the partial-ncpu grenade test where we want to stop
everything but nova_compute.

Change-Id: I6a21821277e56897d705ca5746806e2211632d12