Updated openstack/openstack
Project: openstack-dev/devstack  3acde946e65156cb03e8f6503e314a73581683ab

Avoid uploading trove guest image twice

When creating the trove datastore, get the guest image id from glance.
The trove guest image gets uploaded along with all the other
images specified in $IMAGE_URLS. It is not necessary to upload
it again in init_trove.

Also: add xenapi case to stackrc for trove guest image

Closes-Bug: 1339818
Change-Id: I2973af27ab93182fcd674f874daba1036d767d52