tzdata stills apply DST for Mongolia

[Luis Filipe Domingues]

Since 2017 Mongolia does not apply DST time.

However, on Ubuntu 16.04, the DST time is still applied, so my computers are 1h ahead.

Here you have the output of timedatectl:
      Local time: Thu 2017-06-08 20:10:37 ULAST
  Universal time: Thu 2017-06-08 11:10:37 UTC
        RTC time: Thu 2017-06-08 11:10:37
       Time zone: Asia/Ulaanbaatar (ULAST, +0900)
 Network time on: yes
NTP synchronized: yes
 RTC in local TZ: no

And the same command in Debian Stretch:
      Local time: jeu 2017-06-08 19:10:27 +08
  Universal time: jeu 2017-06-08 11:10:27 UTC
        RTC time: jeu 2017-06-08 11:10:27
       Time zone: Asia/Ulaanbaatar (+08, +0800)
 Network time on: yes
NTP synchronized: yes
 RTC in local TZ: no

The current installed package is:
tzdata:
  Installed: 2016j-0ubuntu0.16.04
  Candidate: 2016j-0ubuntu0.16.04

Please remove DST for Ulaanbaatar.