Updated openstack/openstack
Project: openstack/nova  9e14b5757336509175222d0453acdcf84944bccf
null
Cells rebuild regression fix

The introduction of 'preserve_ephemeral' in rebuilds created a
regression issue with cells.

Closes-Bug: 1281858

Change-Id: Ic8446e8611a41691d12c5dd0c4e1285a586248da