Define downstream pause image for k8s

Change-Id: I4e870acb1a85960d8c37a26efc5027bc7d10cab3
diff --git a/classes/cluster/k8s-ha-contrail/kubernetes/compute.yml b/classes/cluster/k8s-ha-contrail/kubernetes/compute.yml
index b9d1e74..b093b1a 100644
--- a/classes/cluster/k8s-ha-contrail/kubernetes/compute.yml
+++ b/classes/cluster/k8s-ha-contrail/kubernetes/compute.yml
@@ -56,3 +56,4 @@
           - ${linux:system:name}
       hyperkube:
         image: ${_param:kubernetes_hyperkube_image}
+        pause_image: ${_param:kubernetes_pause_image}