What does this MR do?
Adds an information how to install GitLab Runner from DEB/RPM repository for versions < 10.0.
References #2764 (closed) and #2765 (closed)
Do not update/delete: Banner broadcast message test data
Do not update/delete: Notification broadcast message test data
Adds an information how to install GitLab Runner from DEB/RPM repository for versions < 10.0.
References #2764 (closed) and #2765 (closed)