WIP: DNS support

This runs kubelet on the master, and runs skydns as a pod.

Problems:
1) skydns can not find etcd
2) need to not hardcode the master name in the manifest
3) need a specific version tag on the skydns container
4) need support for non-GCE environments
5) needs testing
6) needs to define more abstract REST records for names

@bketelsen