QPID-5779: [Java Broker] JMX plugin's server sockets should set the SO_REUSEADDR socket option

* Plugin now passes correctly configured ServerSocketFactory to JMX for both the registry and connector servers.
* Manually retested SSL connections to JMX.

git-svn-id: https://svn.apache.org/repos/asf/qpid/trunk@1596579 13f79535-47bb-0310-9956-ffa450edef68