Comment 1 for bug 1706221

Needs https://github.com/openstack/nova/commit/a41d265a19b7bcb1af8fc179bf864e00023c6cc6 from upstream, this seems to be fixed in Newton and Ocata. As this depends on other changes, we may have to wait for a sync.

Also need to decide if this fix has to be put in Mitaka.