pkg/controller: cleanup replication_controller.go

type{} is also zeroed - when I saw you use this I thought "that's funny, I've never seen it in use".  I'd reference http://programmers.stackexchange.com/questions/210399/why-is-there-a-new-in-go which summarizes this well.

It's not quite a golint thing, but I'd say its in widespread enough use it should be.