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

tests/testcases/030_check-network.yml

@@ -13,12 +13,20 @@
     when: not ansible_os_family in ["CoreOS", "Container Linux by CoreOS"]
 
 
+  - name: Wait for pods to be ready
+    shell: "{{bin_dir}}/kubectl get pods"
+    register: pods
+    until:
+      - '"ContainerCreating" not in pods.stdout'
+      - '"Pending" not in pods.stdout'
+      - '"Terminating" not in pods.stdout'
+    retries: 60
+    delay: 2
+    no_log: true
+
   - name: Get pod names
     shell: "{{bin_dir}}/kubectl get pods -o json"
     register: pods
-    until: '"ContainerCreating" not in pods.stdout and "Terminating" not in pods.stdout'
-    retries: 60
-    delay: 2
     no_log: true
 
   - name: Get hostnet pods