Updating copyrights

New format: 'Copyright .year-present Open Networking Laboratory'

Change-Id: I1a9e58b355b775e75245ad875a2d7a4df3f03098
diff --git a/protocols/ovsdb/api/src/main/java/org/onosproject/ovsdb/controller/EventSubject.java b/protocols/ovsdb/api/src/main/java/org/onosproject/ovsdb/controller/EventSubject.java
index d8aaef6..c7b6c69 100644
--- a/protocols/ovsdb/api/src/main/java/org/onosproject/ovsdb/controller/EventSubject.java
+++ b/protocols/ovsdb/api/src/main/java/org/onosproject/ovsdb/controller/EventSubject.java
@@ -1,5 +1,5 @@
 /*
- * Copyright 2015 Open Networking Laboratory
+ * Copyright 2015-present 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.