Release app version 2.2.0 with API version 2.2.0

Change-Id: I30ceaca8eb0731d062d87121deeb3a1d0565b4e9
diff --git a/app/pom.xml b/app/pom.xml
index 757c251..cf75012 100644
--- a/app/pom.xml
+++ b/app/pom.xml
@@ -22,7 +22,7 @@
     <parent>
         <groupId>org.opencord</groupId>
         <artifactId>bng</artifactId>
-        <version>2.2.0-SNAPSHOT</version>
+        <version>2.2.0</version>
         <relativePath>../pom.xml</relativePath>
     </parent>