Use node IP lists for HA Proxy ipaddresses
Use node IP lists for HA Proxy ipaddresses

This patch updates the loadbalancer class so that it
defaults to trying to use the node IP list for each
respective service. This data is provided via Hiera
directly (all-nodes-config provides it via the Heat
templates).

By default the ctlplane IP address list is still used
if no service node IP list is provided.

Change-Id: I34cbdf8bd525e6ab61859fe8b8c18fe613dabbfe

paramite/puppet-tripleo,rdo-puppet-modules/puppet-tripleo,rdo-puppet-modules/puppet-tripleo,paramite/puppet-tripleo,openstack/puppet-tripleo,rdo-puppet-modules/puppet-tripleo,egafford/puppet-tripleo,paramite/puppet-tripleo,egafford/puppet-tripleo,openstack/puppet-tripleo,openstack/puppet-tripleo,egafford/puppet-tripleo