update pod.json for new internal command and update router cmd descripti...

Updates for https://github.com/openshift/origin/pull/376, optional integration with e2e test to curl the route instead of direct to the pod.  Documentation update
Sorry, not sure what you're referring to but I'm probably missing something obvious.  Since it's already configurable (I was just checking to make sure that was the desired impl) I should put a TODO where that states what?