Updated openstack/openstack
Project: openstack/heat  e1c1d078afa3ce2d6fabec3ece514726752e0067

Get correct server_id when udpate Volume Attachment

Get the correct server id used for dettach the volume when
updating CinderVolumeAttachment.

Fixed bug #1402500

Change-Id: I3eeb24e6eab8335475d6a76d80a461765089c9c0