Release version 2.1.1

Change-Id: I47455877e0139626fa3843a87986074baa98d4c4
diff --git a/api/pom.xml b/api/pom.xml
index cc07de8..0adab8c 100644
--- a/api/pom.xml
+++ b/api/pom.xml
@@ -20,7 +20,7 @@
     <parent>
         <artifactId>onos-app-igmpproxy</artifactId>
         <groupId>org.opencord</groupId>
-        <version>2.1.1-SNAPSHOT</version>
+        <version>2.1.1</version>
         <relativePath>../pom.xml</relativePath>
     </parent>
     <modelVersion>4.0.0</modelVersion>