[WIP] Add support for applying a Config with set of resources via kubecfg

Discussion: https://github.com/GoogleCloudPlatform/kubernetes/issues/1905
I guess this implies that objects are created in the listed order? Services need to be created first. When we split templates from replication controllers, the templates will need to be created first. We may even add explicit dependencies at some point. It would be fine for the function doing the posting to accept a sorted list of objects, so that we could insert a dependency ordering pass easily later.