Remove the etcd-environment metadata section on the nodepools if Kubernetes.Networking.SelfHosting is Enabled. (#1367)
Remove the etcd-environment metadata section on the nodepools if Kubernetes.Networking.SelfHosting is Enabled. (#1367)

This is to break the dependency that exists on the nodepool stacks on etcd stack resources.

Ref #1370
c-knowles/kube-aws,c-knowles/kube-aws,HotelsDotCom/kube-aws,kubernetes-incubator/kube-aws,HotelsDotCom/kube-aws,kubernetes-incubator/kube-aws