trying to fix "field is immutable" error from oc apply

I don't think we should be trying to set creationTimestamp, pretty sure
this is the field that OpenShift is complaining about.

Limited to stage because I don't want to risk breaking anything.

roles/openshift/project/templates/project.yml

@@ -4,7 +4,10 @@ metadata:
   annotations:
     openshift.io/description: "{{description}}"
     openshift.io/display-name: "{{app}}"
+{% if env == 'staging' %}
+{% else %}
   creationTimestamp: null
+{% endif %}
   name: "{{app}}"
 spec: {}
 status: {}