Added missing cluster param override and class_mapping for contrail models

Change-Id: I04efa981ccd27f1c4e4e46d59772c147d0275fb7
diff --git a/classes/cluster/sl_k8s_contrail/infra/config.yml b/classes/cluster/sl_k8s_contrail/infra/config.yml
index 21a5cac..3def1ca 100644
--- a/classes/cluster/sl_k8s_contrail/infra/config.yml
+++ b/classes/cluster/sl_k8s_contrail/infra/config.yml
@@ -43,6 +43,8 @@
               value_template: <<node_ip>>
             infra_config_deploy_address:
               value_template: <<node_ip>>
+            cluster_domain:
+              value_template: <<node_domain>>
         kubernetes_control01:
           expression: <<node_hostname>>__equals__ctl01
           cluster_param: