Updated openstack/openstack
Project: openstack/nova  085ec1fba1d85cf228bad61d8ae2173636d5a3ad
null
Fix libvirt evacuate instance on shared storage fails

When evacuate instance which has config drive enabled on shared storage,
disk.config file can't be created because of permision error, chowns
disk.config if it already exists.

Change-Id: I20bafc3482ead30297ad5402a09e97141816f4d1
Closes-Bug: 1247526