Feature request - add a parameter for the port to use in RemoteDispatcherImpl

[Cimballi]

Hi,

I suggest to add a parameter for the port to use in RemoteDispatcherImpl so
that one can choose which port to use for the communication.
It can help on a network with firewalls.

I think it means :
- add the parameter / property to the "base/config/ofbiz-containers.xml"
file, and maybe other configuration files
- update the RmiServiceContainer class, handling the parameter / property
- update the RemoteDispatcherImpl class, adding a constructor

Cimballi