* 8-17-stable:
  Merge branch 'upgrade_mysql' into 'master'
  Merge branch 'mattermost_site_url_settings' into 'master'

Update mysql client to 5.5.56.

Closes #2311

See merge request !1532

Mattermost site url settings

Closes #2286

See merge request !1531

Update GitLab Mattermost to 3.6.7 in 8.17

See merge request !1521

Add the old CI and CI redis user to the expected output

Marin Jankovski authored 7 years ago and DJ Mountney committed 7 years ago

Explicitly include tzdata package in Docker.

Closes #2229

See merge request !1483

Detect if we are building for RPI so we can push to raspbian.

See merge request !1384

Detect if we are building for RPI so we can push to raspbian.

See merge request !1384

Fixing typo in references to postgresql_users and postgresql_groups in helper methods

Closes #2037

See merge request !1359

Replace npm call with yarn

See merge request !1315

Fix gitlab-monitor config

See merge request !1344

Add gitlab-monitor port to the prometheus config

See merge request !1347

Fix GitLab Pages boolean flags

See merge request !1348

Moves unzip dependency from EE-only for GitLab Pages

Closes #2020

See merge request !1349

Fix the docker healthcheck

Closes #2016

See merge request !1350

Add explicit check if the upgrade has already happened.

Closes #1995

See merge request !1355

Changing call to create tmp dir as the database user

Closes #2023

See merge request !1364