Updated openstack/openstack
Project: openstack/cinder  9fa5261ece5f3cc60e7700f86f43cc3d9865edda

Remove check on db_exc.DBError

After using oslo.db >= 0.4.0 we will never get DBError Exception

Change-Id: I94d6a155df1d71658e7271ab4d55122906216a87