Update Stacklight k8s-contrail models

Change-Id: I39fd8c51ea2d582a58e5ee3a270eb1e327c99291
diff --git a/classes/cluster/sl_k8s_contrail/stacklight/server.yml b/classes/cluster/sl_k8s_contrail/stacklight/server.yml
index 1394b9e..3a54585 100644
--- a/classes/cluster/sl_k8s_contrail/stacklight/server.yml
+++ b/classes/cluster/sl_k8s_contrail/stacklight/server.yml
@@ -53,12 +53,12 @@
     # Kibana
     kibana_elasticsearch_host: ${_param:cluster_vip_address}
     # Docker/Elasticsearch
-    cluster_node01_hostname: ${_param:stacklight_monitor_node01_hostname}
-    cluster_node01_address: ${_param:stacklight_monitor_node01_address}
-    cluster_node02_hostname: ${_param:stacklight_monitor_node02_hostname}
-    cluster_node02_address: ${_param:stacklight_monitor_node02_address}
-    cluster_node03_hostname: ${_param:stacklight_monitor_node03_hostname}
-    cluster_node03_address: ${_param:stacklight_monitor_node03_address}
+    cluster_node01_hostname: ${_param:stacklight_node01_hostname}
+    cluster_node01_address: ${_param:stacklight_node01_address}
+    cluster_node02_hostname: ${_param:stacklight_node02_hostname}
+    cluster_node02_address: ${_param:stacklight_node02_address}
+    cluster_node03_hostname: ${_param:stacklight_node03_hostname}
+    cluster_node03_address: ${_param:stacklight_node03_address}
     influxdb_port: 8086
     influxdb_admin_password: password
     influxdb_stacklight_password: lmapass
@@ -66,6 +66,10 @@
     prometheus_influxdb_db: lma
     prometheus_influxdb_username: lma
     prometheus_influxdb_password: ${_param:influxdb_stacklight_password}
+  elasticsearch:
+    server:
+      heap:
+        size: 1
   keepalived:
     cluster:
       instance: