Update k8s images and add pause image vars

Change-Id: I45a77ed2c31668623a1c43b314ac659c39d0aa7a
diff --git a/kubernetes/pool/cluster.yml b/kubernetes/pool/cluster.yml
index 17e9006..40cc135 100644
--- a/kubernetes/pool/cluster.yml
+++ b/kubernetes/pool/cluster.yml
@@ -14,7 +14,8 @@
     kubernetes_calico_calicoctl_image: ${_param:kubernetes_calico_calicoctl_repo}/ctl:v1.6.4
     kubernetes_calico_image: ${_param:kubernetes_calico_repo}/node:v2.6.9
     kubernetes_calico_cni_image: ${_param:kubernetes_calico_cni_repo}/cni:v1.11.5
-    kubernetes_hyperkube_image: ${_param:kubernetes_hyperkube_repo}/hyperkube-amd64:v1.8.11-9
+    kubernetes_hyperkube_image: ${_param:kubernetes_hyperkube_repo}/hyperkube-amd64:v1.8.13-11
+    kubernetes_pause_image: ${_param:kubernetes_hyperkube_repo}/pause-amd64:v1.8.13-11
     kubernetes_contrail_cni_image: ${_param:kubernetes_contrail_cni_repo}/contrail-cni:v1.2.0
     kubernetes_contrail_network_controller_image: ${_param:kubernetes_contrail_network_controller_repo}/contrail-network-controller:v1.2.0