source install: update guide from 8.5 to 8.6 does not sugges check git version
The document 8.5-to-8.6.md does not suggest checking the git version as the previos version related ones.
The step sudo -u git -H bundle exec rake gitlab:check RAILS_ENV=production
fails having git version 2.4.3
compiled from sources as suggested in a previous version.
Edited by Marcin Sedlak-Jakubowski