Release app version 2.9.0 with API version 2.9.0

Change-Id: I2781438c18b563b23b76dc6a754b0174aca39a3d
diff --git a/api/pom.xml b/api/pom.xml
index f1f4546..92c4164 100644
--- a/api/pom.xml
+++ b/api/pom.xml
@@ -22,7 +22,7 @@
     <parent>
         <groupId>org.opencord</groupId>
         <artifactId>mcast</artifactId>
-        <version>2.9.0-SNAPSHOT</version>
+        <version>2.9.0</version>
         <relativePath>../pom.xml</relativePath>
     </parent>