This change allows creating a single ingress resource using the
public fqdn of the service, instead of two (cluster and namespace)
that is currently the case. Every openstack-helm chart can have a
network.server.ingress.use_external_ingress_controller boolean
field to choose the creation of a single ingress resource
(ingressName-namespace-fqdn).
Signed-off-by: Yanos Angelopoulos <yanos@admin.grnet.gr>
Change-Id: I46da850fccc3fee76595a2e6c49d51197a282c3e