OCG: update trebuchet config and remove Node

Trebuchet
* It didn't make sense to have a completely separate git repo
  just for deployments. I'm going to use a deploy branch and
  see how that works out.
* According to the documentation, declare the service name
  in a different way so that `restart-service` works.

apt
* OCG requires Node 0.10; but WMF has 0.8 in it's repo right now.
  The installation requirement is causing some havok if I try to
  use a different version of node.

Change-Id: I0a4457f450724e7fbf5c864a3a2e05aed57a231c