Updated openstack/openstack
Project: openstack/nova  bc522143ffc58ca1a8825eae7c9bb888f7b5a931

VMware: delete the driver VMwareESXDriver

In Juno we had a deprcation warning about the VMwareESXDriver no
longer being supported. This class is now deleted.

Change-Id: Id5b50fa944f57cd8fd61611d93caac8066cfd93d