Updated openstack/openstack
Project: openstack/nova  ee3ac250e1fc69bbd8e2c695c2b7e3ce29e16d10

FIX: Fail to remove the logical volume

The logical volume can not be removed when delete VM error. I look at the
code, found that parameter is a list in the libvirt's lvm, but in
imagebackend, parameters passed is a string.

Change-Id: I222f6c5cfe5be63105f2fd8afd7ccd209ca2e5f7
Closes-Bug: #1358552