k8s: Update admission-control list to 1.1 recs
k8s: Update admission-control list to 1.1 recs

NamespaceExists functionality rolled into NamespaceLifecycle.
See: http://kubernetes.io/v1.1/docs/admin/admission-controllers.html

danielfm/kube-aws,c-knowles/kube-aws,AlmogBaku/kube-aws,everpeace/kube-aws,mumoshu/kube-aws,iflix-letsplay/kube-aws,camilb/kube-aws,iflix-letsplay/kube-aws,camilb/kube-aws,everpeace/kube-aws,danielfm/kube-aws,mumoshu/kube-aws,HotelsDotCom/kube-aws,AlmogBaku/kube-aws,kubernetes-incubator/kube-aws,HotelsDotCom/kube-aws,c-knowles/kube-aws,kubernetes-incubator/kube-aws