Changes required upstream to move to kubeadm as a CLI not a lib

[lewismarshall]

To move to use kubeadm CLI will require a few changes upstream. The primary blocker is the implementation of phases which probably won't be until kubernetes 1.8 release (~August 2018).

Phases:

• Community Phases implementation Kubeadm phase implementation checklist kubernetes/kubeadm#267. For more information see phases implementation plan.

Kubeadm patches:

Only two file files have been patched and these will need to be fixed upstream. See build steps.

k8s.io/kubernetes/cmd/kubeadm/app/master/manifests.go:

• Fix manifest hostpaths restrict CA access and support CoreOS ssl
• Support multi-master by setting number of api servers

k8s.io/kubernetes/cmd/kubeadm/app/phases/apiconfig/setupmaster.go:

• Correctly detect current node for taints and tolerations