ONOS-533 Fix copyrights

- Any files created in 2014 and modified in 2015 got a copyright of
  2014-2015
- Used canonical form of 2014-2015 to be inclusive of extra years.
  Some files had 2014,2015

Change-Id: If9a133618873e4000b8f10299bde7c870eb1fbd5
diff --git a/core/store/dist/src/main/java/org/onosproject/store/cluster/impl/HazelcastClusterStore.java b/core/store/dist/src/main/java/org/onosproject/store/cluster/impl/HazelcastClusterStore.java
index 827fec2..e88e2d2 100644
--- a/core/store/dist/src/main/java/org/onosproject/store/cluster/impl/HazelcastClusterStore.java
+++ b/core/store/dist/src/main/java/org/onosproject/store/cluster/impl/HazelcastClusterStore.java
@@ -1,5 +1,5 @@
 /*
- * Copyright 2014 Open Networking Laboratory
+ * Copyright 2014-2015 Open Networking Laboratory
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -195,4 +195,4 @@
                      memberAttributeEvent.getValue());
         }
     }
-}
\ No newline at end of file
+}