Updated openstack/openstack
Project: openstack/heat  2d684a0971fc3bbcc7c8524c13aff6c7d72bca9c
null
Use cinder API for volume attach and detach

Replace nova calls for attaching and detaching volumes
with native cinder API calls.

Closes-Bug: #1298350
Change-Id: I628b4a0dd559389f66ab25b6030a9ad6fc927e39