Bump Kubernetes version from 1.8.6 to 1.10.2

* Updates version references
* Increase memory of test VMs due to higher usage with bump
* Move etcd chart scripts from /tmp to /tmp/bin
* Remove certificate signing options for controller manager
* Remove -a from `kubectl get pods`, since that is deprecated in 1.10
* Shorten liveness/readiness probe times for CoreDNS

Change-Id: I16db0370f1c619e16002dd58e29025eb1538691f

examples/basic/HostSystem.yaml

@@ -9,7 +9,7 @@ metadata:
 data:
   files:
     - path: /opt/kubernetes/bin/kubelet
-      tar_url: https://dl.k8s.io/v1.8.6/kubernetes-node-linux-amd64.tar.gz
+      tar_url: https://dl.k8s.io/v1.10.2/kubernetes-node-linux-amd64.tar.gz
       tar_path: kubernetes/node/bin/kubelet
       mode: 0555
     - path: /etc/logrotate.d/json-logrotate
@@ -34,7 +34,7 @@ data:
     helm:
       helm: lachlanevenson/k8s-helm:v2.7.2
     kubernetes:
-      kubectl: gcr.io/google_containers/hyperkube-amd64:v1.8.6
+      kubectl: gcr.io/google_containers/hyperkube-amd64:v1.10.2
   packages:
     repositories:
       - deb http://apt.dockerproject.org/repo ubuntu-xenial main