Release version 1.6.0

Change-Id: I4f474999bb4427afb6538d15f18edd7f50f833c2
diff --git a/api/pom.xml b/api/pom.xml
index 8a1264e..eb57b56 100644
--- a/api/pom.xml
+++ b/api/pom.xml
@@ -20,7 +20,7 @@
     <parent>
         <artifactId>dhcpl2relay</artifactId>
         <groupId>org.opencord</groupId>
-        <version>1.6.0-SNAPSHOT</version>
+        <version>1.6.0</version>
     </parent>
     <modelVersion>4.0.0</modelVersion>