Change discovery.zen.ping.unicast.hosts to log address

Change-Id: I200bcb894b71ba5be4083b78150aa1eaafea3e3c
Closes-Bug: PROD-24681
diff --git a/docker/swarm/stack/monitoring/elasticsearch_client_node.yml b/docker/swarm/stack/monitoring/elasticsearch_client_node.yml
index d642dd2..8380377 100644
--- a/docker/swarm/stack/monitoring/elasticsearch_client_node.yml
+++ b/docker/swarm/stack/monitoring/elasticsearch_client_node.yml
@@ -36,7 +36,7 @@
                 xpack.monitoring.enabled: "false"
                 bootstrap.memory_lock: "false"
                 discovery.zen.minimum_master_nodes: 2
-                discovery.zen.ping.unicast.hosts: ${_param:stacklight_monitor_address}
+                discovery.zen.ping.unicast.hosts: ${_param:stacklight_log_address}
               labels:
                 com.mirantis.monitoring: "elasticsearch"
               image: ${_param:docker_image_elasticsearch}