openshift-apps/coreos-koji-tagger: add stg target repo

We won't use the prod repo for staging since the rpms in staging
koji are so old. We'll basically have to curate the list of rpms
to match what is in staging koji (older rpms).

roles/openshift-apps/coreos-koji-tagger/templates/deploymentconfig.yml

@@ -20,11 +20,17 @@ spec:
       - env:
         - name: COREOS_KOJI_TAGGER_KEYTAB_FILE
           value: /etc/coreos-koji-tagger-keytab/koji-keytab
-        - name: COREOS_KOJI_TAGGER_USE_STG
 {% if env == "staging" %}
+        - name: COREOS_KOJI_TAGGER_USE_STG
           value: "true"
-{% else %}
-          value: "false"
+        # We are using https://github.com/dustymabe/fedora-coreos-config/tree/fedora-infra-staging
+        # for now. Feel free to fork/create your own repo to test with and replace the values below.
+        # The repo must be set up with https://apps.fedoraproject.org/github2fedmsg so that it
+        # can get messages on the message bus when commits are made.
+        - name: GITHUB_REPO_FULLNAME
+          value: "dustymabe/fedora-coreos-config"
+        - name: GITHUB_REPO_BRANCH
+          value: "refs/heads/fedora-infra-staging"
 {% endif %}
         args: ['infinity']
         command: ['/usr/bin/sleep']