Release app version 2.4.0 with API version 2.4.0

Change-Id: I876dc6e1f6523edd1c5469fd1bb4272ac7a819a3
diff --git a/app/pom.xml b/app/pom.xml
index ee5e154..67dfc8f 100644
--- a/app/pom.xml
+++ b/app/pom.xml
@@ -21,7 +21,7 @@
     <parent>
         <groupId>org.opencord</groupId>
         <artifactId>mcast</artifactId>
-        <version>2.4.0-SNAPSHOT</version>
+        <version>2.4.0</version>
         <relativePath>../pom.xml</relativePath>
     </parent>