Force the server to stop at shutdown. Hopefully this will help our tests pass regularly while running on hudson.

git-svn-id: https://svn.apache.org/repos/asf/lucene/solr/trunk@573897 13f79535-47bb-0310-9956-ffa450edef68

client/java/solrj/src/org/apache/solr/client/solrj/embedded/JettySolrRunner.java

@@ -66,6 +66,7 @@ public class JettySolrRunner
   private void init( String context, int port )
   {
     server = new Server( port );    
+    server.setStopAtShutdown( true );
     
     // Initialize the servlets
     Context root = new Context( server, context, Context.SESSIONS );