Fix net for contrail.

* Moved keepalived from ens3 to vhost0.
* Moved haproxy for k8s to vhost0.
* Changed netchecker images versions to stable label.

Change-Id: Iacfc379e405660bba075cc713cd4183717864025
diff --git a/classes/cluster/k8s-ha-contrail/kubernetes/compute.yml b/classes/cluster/k8s-ha-contrail/kubernetes/compute.yml
index 1e9913f..10d54c9 100644
--- a/classes/cluster/k8s-ha-contrail/kubernetes/compute.yml
+++ b/classes/cluster/k8s-ha-contrail/kubernetes/compute.yml
@@ -34,6 +34,8 @@
         bip: 172.31.255.1/24
   kubernetes:
     pool:
+      kubelet:
+        address: ${_param:single_address}
       network:
         engine: opencontrail
         config: