Backport GitLab domain helper methods (!18376) · Merge requests · GitLab.org / GitLab FOSS · GitLab

Oswaldo Ferreira requested to merge osw-backport-gl-subdomain-method into master Apr 13, 2018

Add GitLab.com domain helper methods that were added to EE on https://gitlab.com/gitlab-org/gitlab-ee/commit/6c25cadf36e7909fe0edaf03c228393d4b65a528 back to CE.