Add NettiX domains to MDFP list

[ghostwords]

Domain list taken from https://www.nettix.fi/in-english/ and error reports (below).

Another set of broken sites caused by Badger not auto-learning to block Google Analytics (#367). GA sets a first-party cookie on nettix.fi; NettiX uses nettix.fi subdomains scoped to the GA cookie to serve static resources on NettiX sites.

[ghostwords]

Error report counts by page domain and exact blocked subdomain:

+------------------------+------------------+-------+
| fqdn                   | blocked_fqdn     | count |
+------------------------+------------------+-------+
| www.nettiauto.com      | script.nettix.fi |    21 |
| www.nettiauto.com      | image.nettix.fi  |    12 |
| www.nettikone.com      | script.nettix.fi |     7 |
| www.nettimoto.com      | image.nettix.fi  |     6 |
| www.nettimoto.com      | script.nettix.fi |     6 |
| www.nettivene.com      | script.nettix.fi |     6 |
| www.nettikone.com      | image.nettix.fi  |     5 |
| www.nettivaraosa.com   | image.nettix.fi  |     5 |
| www.nettiauto.com      | cdn.nettix.fi    |     4 |
| www.nettivaraosa.com   | script.nettix.fi |     4 |
| www.nettivene.com      | cdn.nettix.fi    |     3 |
| www.nettivene.com      | image.nettix.fi  |     3 |
| www.nettikaravaani.com | script.nettix.fi |     3 |
| www.nettikaravaani.com | cdn.nettix.fi    |     2 |
| www.nettikone.com      | cdn.nettix.fi    |     2 |
| www.nettimokki.com     | script.nettix.fi |     2 |
| www.lomapalvelu.fi     | image.nettix.fi  |     1 |
| www.nettikaravaani.com | image.nettix.fi  |     1 |
| www.nettimokki.com     | image.nettix.fi  |     1 |
| m.nettivaraosa.com     | script.nettix.fi |     1 |
| www.lomapalvelu.fi     | script.nettix.fi |     1 |
+------------------------+------------------+-------+