skipper remove hyperkube (#300)
skipper remove hyperkube (#300)

* skipper remove hyperkube

* update-ver

* use teapot instead of pathfinder

* enable sa token

* use official image

* fix Skipper Docker image

zalando-incubator/kubernetes-on-aws,zalando-incubator/kubernetes-on-aws,zalando-incubator/kubernetes-on-aws