Updated openstack/openstack
Project: openstack/cinder  b3e68d7bb69acca9cb91584d5c1eaa631544469b

VMware: cinder-volume create_session fail at retry

cinder-volume exits with an exception while accessing a None
object during retry of create session failure.

Closes-Bug: #1374585

Change-Id: I1d8dd034e9c6eb7568cf6f243a203df7de1777da