AMQ-7490 - Fix JMX regression

(cherry picked from commit aa8900c)

Author: coheigea

activemq-broker/src/main/java/org/apache/activemq/broker/jmx/ManagementContext.java

@@ -587,13 +587,12 @@ private void createConnector(MBeanServer mbeanServer) throws MalformedObjectName
             rmiServer = ""+getConnectorHost()+":" + rmiServerPort;
         }
 
-        final Map<String,Object> env = new HashMap<>();
         server = new RMIJRMPServerImpl(connectorPort, null, null, environment);
 
         final String serviceURL = "service:jmx:rmi://" + rmiServer + "/jndi/rmi://" +getConnectorHost()+":" + connectorPort + connectorPath;
         final JMXServiceURL url = new JMXServiceURL(serviceURL);
 
-        connectorServer = new RMIConnectorServer(url, env, server, ManagementFactory.getPlatformMBeanServer());
+        connectorServer = new RMIConnectorServer(url, environment, server, ManagementFactory.getPlatformMBeanServer());
         LOG.debug("Created JMXConnectorServer {}", connectorServer);
     }