Updated openstack/openstack
Project: openstack/cinder  b776fa41950b332269ddc46a8e24f3037280ac7b

Further cleanup of reservations index

It was discovered that the duplicate index checking does not work
on db2, so this fixes it.

Change-Id: I1a80b9c1fb6cfe916a2110de3151a09fa3618e75
Partial-bug: 1348720