[CentOS-mirror] AltArch mirror geographical coverage, need more mirrors outside US/EU

Hi. We add AltArch mirror.

HTTP: http://mirror.hoster.kz/centos-altarch/
HTTPS: https://mirror.hoster.kz/centos-altarch/
FTP: ftp://mirror.hoster.kz/centos-altarch/
RSYNC: rsync://mirror.hoster.kz/centos-altarch/