[RFC] Reworked MM udev tags

[Aleksander Morgado]

Hey all,

Please review this MR that repurposes the ID_MM_DEVICE_IGNORE tag
(e.g. so that it applies to all port types and to all filter modes)
and also renames/removes some other tags:

https://gitlab.freedesktop.org/mobile-broadband/ModemManager/merge_requests/138

The commit doing the ID_MM_DEVICE_IGNORE tag logic change should
probably be backported to MM 1.10 so that users are able to blacklist
devices also in STRICT filter mode.

Comments welcome!

-- 
Aleksander
https://aleksander.es