Updated openstack/openstack
Project: openstack/nova  abcd6d7e78a5616b85ae043c2f39e734d2ae9adb

VMWare: Remove unused exceptions

Nova exceptions UseLinkedCloneConfigurationFault and
VMwareDriverConfigurationException now is present in
oslo.vmware library, so remove it and replace all of
its usages by usages of exceptions from oslo.vmware

Change-Id: I692030cff49965fac2d8da1bb76580fe9a607b61