WIP: iproute2 tools implementation

Hey Dan, had a few hours of concentration on this and had a bash - I'm not sure if the approach is sane: I capture the command params for each resource and then execute... e.g. i store "ip link add foo type dummy" for interface 'foo' and then invoke '/usr/sbin/ip for str.split('ip')[1]

anyway if useful pick it up from here or I will continue tomorrow with any comments and start thinking about tests.

thanks! marios
Why use vconfig at all when ip link knows how to set up and tear down vlan interfaces, and doesn't have the name restrictions that vconfig does?