Update version to 2.15.0

Author: mekya

pom.xml

@@ -3,7 +3,7 @@ xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/ma
     <parent>
         <groupId>io.antmedia</groupId>
         <artifactId>parent</artifactId>
-        <version>3.0.0-SNAPSHOT</version>
+        <version>2.15.0</version>
     </parent>
     <modelVersion>4.0.0</modelVersion>
     <artifactId>ant-media-server</artifactId>