Summary
-------

Add new jstatd tool option to specify a RMI connector port.

Problem
-------

When running jstatd on a remote host behind a firewall or inside a container it should be possible to specify what exact ports need to be used. Currently jstatd tool provides command line option `-p` to specify RMI registry port but remote objects still communicate over random ports. An option to specify RMI connector port needs to be added.

Solution
--------

Introduce `-r` option to jstatd to specify RMI connector port number.


Specification
-------------
jstatd can accept `-r` option to specify RMI connector port.

```    
$ jstatd -help  

  usage: jstatd [-nr] [-p port] [-r rmiport] [-n rminame]
       jstatd -?|-h|--help
    
```