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-apps/rotate_tokens/tasks/main.yml

@@ -0,0 +1,20 @@
+---
+#FIXME(mattymo): Exclude built in secrets that were automatically rotated,
+#instead of filtering manually
+- name: Rotate Tokens | Get all serviceaccount tokens to expire
+  shell: >-
+    {{ bin_dir }}/kubectl get secrets --all-namespaces
+    -o 'jsonpath={range .items[*]}{"\n"}{.metadata.namespace}{" "}{.metadata.name}{" "}{.type}{end}'
+    | grep kubernetes.io/service-account-token
+    | egrep 'default-token|kube-proxy|kube-dns|dnsmasq|netchecker|weave|calico|canal|flannel|dashboard|cluster-proportional-autoscaler|efk|tiller'
+  register: tokens_to_delete
+  run_once: true
+
+- name: Rotate Tokens | Delete expired tokens
+  command: "{{ bin_dir }}/kubectl delete secrets -n {{ item.split(' ')[0] }} {{ item.split(' ')[1] }}"
+  with_items: "{{ tokens_to_delete.stdout_lines }}"
+  run_once: true
+
+- name: Rotate Tokens | Delete pods in system namespace
+  command: "{{ bin_dir }}/kubectl delete pods -n {{ system_namespace }} --all"
+  run_once: true