Updated openstack/openstack
Project: openstack/nova  73890232237df3a4b537921970adf71a3f537d4f

VMware: Use vm_mode constants

Address missing changes for the vm_mode type from
commit 8fcd1b2c73dad8e2a7b4d299da270934fd5328cc.

Change-Id: Id03dc089af064969501ee2fc9d965a2028f901e4
Co-authored-by: Gary Kotton <gkotton@vmware.com>