openshift-apps: awaken the pruner

Let's try this again now that the OSTree fixes for
https://github.com/ostreedev/ostree/pull/2808 are in.

This reverts commit 3354d0b821.

roles/openshift-apps/fedora-ostree-pruner/templates/deploymentconfig.yml

@@ -20,8 +20,8 @@ spec:
       - name: fedora-ostree-pruner
         # sleep infinity is useful for debugging environment issues
         # comment out when not debugging
-        args: ['/usr/bin/sleep', 'infinity']
-        command: ['/usr/bin/dumb-init']
+        # args: ['/usr/bin/sleep', 'infinity']
+        # command: ['/usr/bin/dumb-init']
         volumeMounts:
         - name: fedora-ostree-content-volume
           mountPath: /mnt/koji