add more info to copycat timeout log

Change-Id: I713caf37b3ca99c3b7319be35cb8eb03fb3c27d4
diff --git a/core/store/dist/src/main/java/org/onlab/onos/store/service/impl/ClusterMessagingProtocolClient.java b/core/store/dist/src/main/java/org/onlab/onos/store/service/impl/ClusterMessagingProtocolClient.java
index 0c2aacd..582e00c 100644
--- a/core/store/dist/src/main/java/org/onlab/onos/store/service/impl/ClusterMessagingProtocolClient.java
+++ b/core/store/dist/src/main/java/org/onlab/onos/store/service/impl/ClusterMessagingProtocolClient.java
@@ -132,8 +132,8 @@
             } catch (IOException | InterruptedException | ExecutionException | TimeoutException e) {
                 if (message.subject().equals(ClusterMessagingProtocol.COPYCAT_SYNC) ||
                         message.subject().equals(ClusterMessagingProtocol.COPYCAT_PING)) {
-                    log.warn("Request to {} failed. Will retry "
-                            + "in {} ms", remoteNode, RETRY_INTERVAL_MILLIS);
+                    log.warn("{} Request to {} failed. Will retry in {} ms",
+                             message.subject(), remoteNode, RETRY_INTERVAL_MILLIS);
                     THREAD_POOL.schedule(
                             this,
                             RETRY_INTERVAL_MILLIS,