[review] u-blox auth settings fix

[Dan Williams]

On Fri, 2018-06-22 at 16:57 +0200, Aleksander Morgado wrote:
> Hey,
> 
> I've pushed a new MR to gitlab fixing the authentication settings
> request used in u-blox so that it always contains user/pass string
> fields, even if empty, as per the AT command reference.
> 
> https://gitlab.freedesktop.org/mobile-broadband/ModemManager/merge_re
> quests/3

Merged to git master.

Dan