Upgrade to kubeadm (#1667)

* Enable upgrade to kubeadm

* fix kubedns upgrade

* try upgrade route

* use init/upgrade strategy for kubeadm and ignore kubedns svc

* Use bin_dir for kubeadm

* delete more secrets

* fix waiting for terminating pods

* Manually enforce kube-proxy for kubeadm deploy

* remove proxy. update to kubeadm 1.8.0rc1

roles/kubernetes/node/tasks/main.yml

@@ -96,6 +96,13 @@
   when: not kubeadm_enabled
   tags: kube-proxy
 
+- name: Purge proxy manifest for kubeadm
+  file:
+    path: "{{ kube_manifest_dir }}/kube-proxy.manifest"
+    state: absent
+  when: kubeadm_enabled
+  tags: kube-proxy
+
 # reload-systemd
 - meta: flush_handlers