fedora-ostree-pruner: start building from correct context dir

Now that the upstream PR [1] has merged let's start building from that
and also stop using `sleep infinity`.

[1] https://github.com/coreos/fedora-coreos-releng-automation/pull/79

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

@@ -7,7 +7,7 @@ metadata:
 spec:
   source:
     type: Git
-    contextDir: coreos-ostree-importer
+    contextDir: fedora-ostree-pruner
     git:
 {% if env == "staging" %}
       ref: fedora-infra-staging

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: ['infinity']
-        command: ['/usr/bin/sleep']
+        #args: ['infinity']
+        #command: ['/usr/bin/sleep']
         volumeMounts:
         - name: fedora-ostree-content-volume
           mountPath: /mnt/koji