[Systemd config] Add new GitLab 8.3 workhorse options
For GitLab 8.3, new workhorse options were added to lib/support/init.d/gitlab.default.example. This merge request adds these options to gitlab-workhorse.service.
Do not update/delete: Banner broadcast message test data
Do not update/delete: Notification broadcast message test data
For GitLab 8.3, new workhorse options were added to lib/support/init.d/gitlab.default.example. This merge request adds these options to gitlab-workhorse.service.