lower log levels

Change-Id: I48feba520fe72b531d3b6c36309216c549d599ca
diff --git a/core/store/dist/src/main/java/org/onlab/onos/store/intent/impl/HazelcastIntentBatchQueue.java b/core/store/dist/src/main/java/org/onlab/onos/store/intent/impl/HazelcastIntentBatchQueue.java
index 6b4f802..5e9499a 100644
--- a/core/store/dist/src/main/java/org/onlab/onos/store/intent/impl/HazelcastIntentBatchQueue.java
+++ b/core/store/dist/src/main/java/org/onlab/onos/store/intent/impl/HazelcastIntentBatchQueue.java
@@ -211,7 +211,7 @@
     private class InternalLeaderListener implements LeadershipEventListener {
         @Override
         public void event(LeadershipEvent event) {
-            log.debug("Leadership Event: time = {} type = {} event = {}",
+            log.trace("Leadership Event: time = {} type = {} event = {}",
                       event.time(), event.type(), event);
 
             String topic = event.subject().topic();