Updated openstack/openstack
Project: openstack/nova  3f2202a234bfca9dc9a873ffa6d5e7ad0850926a

VMware: cleanup the constructors of the compute drivers

The 'read_only' parameter was never used by the compute drivers.
The 'scheme' parameter should be passed to the base constructor.

Change-Id: I3abd40a50896664ee274f057ded8ec2460679c82