Declare the greenwave fedmsg cert in the container's config.

roles/openshift-apps/greenwave/templates/configmap.yml

@@ -227,12 +227,17 @@ metadata:
   name: greenwave-fedmsg-configmap
 data:
   greenwave.py: |-
+    import socket
     config = dict(
       # XXX: change to dbm backend with persistent volume.
       greenwave_cache={'backend': 'dogpile.cache.memory'},
       sign_messages=True,
       active=True,
 
+      certnames={
+          "greenwave." + socket.gethostname(): "greenwave",
+      },
+
 {% if env == 'staging' %}
       environment='stg',
       relay_inbound=["tcp://busgateway01.stg.phx2.fedoraproject.org:9941"],