Updated openstack/openstack
Project: openstack/cinder  4b2600fe3ee1e233d19250dc6c38f5a3959c0e37

Avoid using the disk cache on volume initialisation

When caching is involved, the volume might be
unmapped before the copy actually hit the disk or the
VM starts booting before all of the data has been flushed,
which causes the VM to crash at an arbitrary point in time.

Closes-Bug: #1363016

Change-Id: I7a04f683add8c23b9125fe837c4048ccc3ac224d