Update requirements.md to make 8GB the minimum instance size (!20133) · Merge requests · GitLab.org / GitLab FOSS · GitLab

Achilleas Pipinellis - OOO until November 25th (parental leave) requested to merge docs/install-requirements into master Jun 25, 2018

What does this MR do?

Port of EE https://gitlab.com/gitlab-org/gitlab-ee/merge_requests/6213