Release app version 2.3.1 with API version 2.3.1

Change-Id: Ib35906cf7fe7e7b6bde5e57c8e7d210972700020
diff --git a/app/pom.xml b/app/pom.xml
index 209fc6d..15edff8 100644
--- a/app/pom.xml
+++ b/app/pom.xml
@@ -21,7 +21,7 @@
     <parent>
         <groupId>org.opencord</groupId>
         <artifactId>mcast</artifactId>
-        <version>2.3.0-SNAPSHOT</version>
+        <version>2.3.1</version>
         <relativePath>../pom.xml</relativePath>
     </parent>