oraculum: Use python3.9 s2i image on prod, change frontend source branch

roles/openshift-apps/oraculum/templates/buildconfig.yml

@@ -19,14 +19,8 @@ spec:
     type: Source
     sourceStrategy:
       from:
-{% if env == 'staging' %}
         kind: DockerImage
         name: registry.access.redhat.com/ubi8/python-39
-{% else %}
-        kind: ImageStreamTag
-        namespace: openshift
-        name: python:3.6
-{% endif %}
   triggers:
   - type: ConfigChange
   - type: ImageChange
@@ -46,7 +40,10 @@ spec:
     type: Git
     git:
       uri: 'https://pagure.io/fedora-qa/packager_dashboard.git'
+{% if env == 'staging' %}
       ref: 'master'
+{% else %}
+      ref: 'prod'
   strategy:
     type: Docker
     dockerStrategy: