Add the CentOS Fedmsg Relay to the production bus

Fixes: https://pagure.io/fedora-infrastructure/issue/6281

We are currently filtering -only- org.centos.prod messages through this
relay, and the fedmsg-meta work is all finished (thanks @pingou!). We
should be able to publish to the prod bus now.

roles/fedmsg/base/templates/endpoints-cico.py.j2

@@ -1,11 +1,9 @@
 # This tells nodes to pull messages from ci.centos.org
 
 config = dict(
-    {% if env == 'staging' %}
     endpoints={
         "centos-ci-public-relay": [
             "tcp://fedmsg-relay.ci.centos.org:9940",
         ],
     },
-    {% endif %}
 )