* Use patch to re-define the plan definition with required
sequence of phases applicable to the specific type/site instead of
defining a new plan.
* The idea of this change is to have one unique plan for deployment
'deploy-gating' with its own definition per type/site.
RelatesTo: #176
Change-Id: I162883dd2e86b709fbb483b985130e8748d8e557
c6df58d760