add new line at EOF

Change-Id: I9396405c4c81af64ad8f70cf685a9631b076a05b
diff --git a/core/api/src/main/java/org/onlab/onos/cluster/package-info.java b/core/api/src/main/java/org/onlab/onos/cluster/package-info.java
index 3cb37c3..ddc8a73 100644
--- a/core/api/src/main/java/org/onlab/onos/cluster/package-info.java
+++ b/core/api/src/main/java/org/onlab/onos/cluster/package-info.java
@@ -1,4 +1,4 @@
 /**
  * Set of abstractions for dealing with controller cluster related topics.
  */
-package org.onlab.onos.cluster;
\ No newline at end of file
+package org.onlab.onos.cluster;