location-importer.in: Import (technical) AS names from ARIN

location-importer.in: Import (technical) AS names from ARIN

ARIN and LACNIC, unfortunately, do not seem to publish data containing
human readable AS names. For the former, we at least have a list of
tecnical names, which this patch fetches and inserts into the autnums
table.

While some of them do not seem to be suitable for human consumption (i.
e. being very cryptic), providing these data might be helpful
neverthelesss.

The second version of this patch contains some additional remarks on
efficient Python coding style from Michael, doing things more "pythonic".

Signed-off-by: Peter Müller <peter.mueller@ipfire.org>
Signed-off-by: Michael Tremer <michael.tremer@ipfire.org>