Release version 4.2.0

Change-Id: I2ded71b0570fddc5f0b0287f7fdd364cf67e0f3f
diff --git a/api/pom.xml b/api/pom.xml
index 1fcc345..3d6d93f 100644
--- a/api/pom.xml
+++ b/api/pom.xml
@@ -22,7 +22,7 @@
     <parent>
         <artifactId>olt</artifactId>
         <groupId>org.opencord</groupId>
-        <version>4.2.0-SNAPSHOT</version>
+        <version>4.2.0</version>
         <relativePath>../pom.xml</relativePath>
     </parent>