[bugfix] Make sure that the JMX servlet is started upon server start. This avoids an error in Monex.

Author: dizzzz

exist-jetty-config/src/main/resources/webapp/WEB-INF/web.xml

@@ -176,6 +176,7 @@
     <servlet>
         <servlet-name>JMXServlet</servlet-name>
         <servlet-class>org.exist.management.client.JMXServlet</servlet-class>
+        <load-on-startup>4</load-on-startup>
     </servlet>
 
     <!--