Add service networks to hieradata
Add service networks to hieradata

This adds a mapping of which service is on which network. This
information can be used to fetch a certificate depending on the
network (since they use different hostnames).

Change-Id: I176245da591bea28aeabf3d2b552f24456c98c43

dprince/tripleo-heat-templates,trozet/opnfv-tht,openstack/tripleo-heat-templates,trozet/opnfv-tht,dprince/tripleo-heat-templates,trozet/opnfv-tht,openstack/tripleo-heat-templates