[pve-devel] firewall rules format

[Dietmar Maurer]

> > But above syntax is basically iptables format, with some
> > simplifications ;-) Or what would you change exactly?
> >
> -source -> -s
> -dest   -> -d

The getopt-long parser usually accept several option format, like:

--source
-source
-s

As long as it is unique. But for now I want to keep things simple. We just need to 
decide if we move from position based arguments to named arguments.