antergos-mirrorlist not updated, causing install issues

[ghost]

forum post: https://github.com/Antergos/Cnchi/blob/0.16.x/utils/antergos-mirrorlist

Summary:

• Antergos live iso is currently using the old antergos-mirrorlist https://hastebin.com/eqeborejil.shell and is not updated when running "pacman -S antergos-mirrorlist" when file exists. File has to be deleted first before a new one can be created.

• Using the old antergos-mirrorlist causes install not no start after cnchi ask for username and password, and causing progress bar to get stuck at 0%

• old/default antergos-mirrorlist only has 1 mirror enabled, so if this fails(it fails on me even using netinstall), installation will not continue.

• For the most part, there should be less manual intervention from users, especially when it deals with using superuser level(manual editing antergos mirrorlist or deleting it requires superuser mode) unless really needed. This doesnt seem to be a "really needed" case as this is suppose to be done or already handled by cnchi(which currently has an updated antergos-mirrorlist than the iso)