configure pacemaker VIPs for isolated networks
configure pacemaker VIPs for isolated networks

This patch updates the overcloud pacemaker role manifest so
that it optionally configures VIPs on isolated networks if
they are enabled.

Change-Id: I6123ee622abe4d8d7b5f76cf9bac43acd80c1f64

dprince/tripleo-heat-templates,wyg3958/tripleo-heat-templates,openstack/tripleo-heat-templates,wyg3958/tripleo-heat-templates,openstack/tripleo-heat-templates,dprince/tripleo-heat-templates,trozet/opnfv-tht,trozet/tripleo-heat-templates,bcrochet/tripleo-heat-templates,rdo-management/tripleo-heat-templates,trozet/opnfv-tht,trozet/tripleo-heat-templates,rdo-management/tripleo-heat-templates,bcrochet/tripleo-heat-templates,trozet/opnfv-tht,bcrochet/tripleo-heat-templates