Document all gitlab runner registrations and plans to consolidate them
Value
Restrict the number of jobs that are run in parallel on the CI server.
Description
- Document all gitlab runner registrations
- Describe what jobs they are used to run, how "heavy" the jobs are and how often they run
- Figure out what jobs can be scheduled in off-peak hours i.e. not strictly MR-related
- Create a plan to allow for scheduling of jobs e.g. by resource usage, non-critical postponed to off-peak hours, etc.