Add support for net.bridge capability

[Marcel Holtmann]

Hi Dan,

> > when using bridge devices in Linux, they get classified as normal
> > Ethernet devices. However I think we should clearly mark them as bridge
> > devices and assign net.bridge capability to them. The attached patch
> > does exactly this.
> 
> This is probably Good Thing; I should add bits to NM to ignore bridge
> devices for now since they will be handled badly at the moment.

what is the general perception of this patch? I think there is no
question that we have to classify our network interface properly, but
should we do it this way? For me it makes sense, but others might
disagree.

If you think it is a good enough, please commit the patch since I still
have no freedesktop.org access.

Regards

Marcel