add etcd_control node classification

Change-Id: Ib824462bbc12993f3a44f1bad6908d52db6c974b
diff --git a/classes/cluster/k8s_ha_contrail/infra/config.yml b/classes/cluster/k8s_ha_contrail/infra/config.yml
index 30e09e7..4bff341 100644
--- a/classes/cluster/k8s_ha_contrail/infra/config.yml
+++ b/classes/cluster/k8s_ha_contrail/infra/config.yml
@@ -69,6 +69,21 @@
           cluster_param:
             kubernetes_control_node03_address:
               value_template: <<node_control_ip>>
+        etcd_control01:
+          expression: <<node_hostname>>__equals__ctl01
+          cluster_param:
+            etcd_control_node01_address:
+              value_template: <<node_deploy_ip>>
+        etcd_control02:
+          expression: <<node_hostname>>__equals__ctl02
+          cluster_param:
+            etcd_control_node02_address:
+              value_template: <<node_deploy_ip>>
+        etcd_control03:
+          expression: <<node_hostname>>__equals__ctl03
+          cluster_param:
+            etcd_control_node03_address:
+              value_template: <<node_deploy_ip>>
         opencontrail_control01:
           expression: <<node_hostname>>__equals__ntw01
           cluster_param: