Add panko config to ceilometer notification agent container
Add panko config to ceilometer notification agent container

Without this, ceilometer notification agent cant find panko
and skips posting events to it.

Change-Id: Ibfeef5c557d1ceb11a999aa947597014ca94ec34

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