Release app version 5.1.0 with API version 5.1.0

Change-Id: Ib5bca5639ef701d8115b7919ff99904cc217cdc6
diff --git a/api/pom.xml b/api/pom.xml
index 4a6fa6d..6d447c1 100644
--- a/api/pom.xml
+++ b/api/pom.xml
@@ -20,7 +20,7 @@
     <parent>
         <artifactId>olt</artifactId>
         <groupId>org.opencord</groupId>
-        <version>5.1.0-SNAPSHOT</version>
+        <version>5.1.0</version>
     </parent>
     <modelVersion>4.0.0</modelVersion>