[GSoC] Short update - net rpc conf list command

[Vicentiu Ciorbaru]

Hello,

This is a short update on my progress.

I've created a good chunk of the net rpc conf list function.
I've modified the net command to include net rpc conf in it's command
list.
The list command prints it's usage if it has too many parameters.

If everything goes as planned, it should be functional tomorrow.

Cheers,
Vicentiu Ciorbaru