Bug#881769: udev: Docs on upgrading to predictable network interface names don't work

[Martin Pitt]

Hello Karl,

Karl O. Pinc [2017-11-14 16:46 -0600]:
> The stretch README.Debian.gz for udev omits mention that
> update-initramfs -u must be run after changing configuration files
> when converting to the new "predictable network interface names".
>
> Attached is a patch which clarifies the README.Debian.

Thanks for this!  I didn't take your patch verbatim, as I found some parts to
be too redundant or complicated. But indeed there were some good suggestions in
it. Committed

   https://salsa.debian.org/systemd-team/systemd/commit/240368eb281c

Cheers,

Martin