FALCON-2050 Configure jetty parent classloader to be prioritized over…

… webapp classloader

Enabled the parent classloader to have priority over the webapp classloader

Author: Venkat Ranganathan <venkat@hortonworks.com>

Reviewers: "Sandeep Samudrala <sandysmdl@gmail.com>"

Closes #211 from vrangan/0.10

prism/src/main/java/org/apache/falcon/util/EmbeddedServer.java

@@ -35,6 +35,7 @@ public EmbeddedServer(int port, String path) {
         server.addConnector(connector);
 
         WebAppContext application = new WebAppContext(path, "/");
+        application.setParentLoaderPriority(true);
         server.setHandler(application);
     }