Code review comment for ~raharper/curtin:fix/dname_to_serial_wwn_if_available

one comment in line.

I had once envisioned thath we might just write a shell or other program
that interpreted config and dump that into the installed system.

either way, we're dumping files into the installed system that wont ever
be serviced, so its not a terrible suggestion.

my idea would have been to have more "config" like format in /etc/curtin/disks
and a udev rule that fired that read that data.

data format might look like this:
   name=mydisk1 serial=foo-serial