Updated openstack/openstack
Project: openstack/nova  270c017d55888ae60ab9a15549be0a73238a9bc4
null
Clean swap_volume rollback, on libvirt exception.

Handling swap_volume command's rollback on the manager side
instead of the API, to allow clean rollback.

Change-Id: I7d5c1e66bf01fd12fcaa783c1c3c90d92b009aea
Closes-Bug: #1222656