Updated openstack/openstack
Project: openstack-dev/devstack  ad3ac5876b8da22a9a517c57a281e9af336b3bd0
null
Move libvirt install + setup to functions-libvirt

Moves installation and setup of libvirt to a common functions-libvirt,
which can be used by other drivers in the future that may require
cross-distro libvirt installation and config but are not using
VIRT_DRIVER=libvirt (ie, Ironic).

Change-Id: I4a9255c8b4bacd5acfde9b8061c9e537aeea592c