Adds stop and disable for libvirtd on upgrade to containers
Adds stop and disable for libvirtd on upgrade to containers

Adds this into the tripleo_upgrade_node.sh executed by the
operator for the major upgrade see the bug for more info

Change-Id: Ic54b48b149594e8ea08e95152111bcdaf7b252b7
Closes-Bug: 1707926

dprince/tripleo-heat-templates,openstack/tripleo-heat-templates,openstack/tripleo-heat-templates,dprince/tripleo-heat-templates