Add quarantine job for live environments
We have cases where:
- A test can only run on a live environment
- Certain failures only/mostly happen on live environments (e.g: gitlab-org/gitlab#455927)
In these cases, it is helpful to run a quarantined test in live environments for testing and debugging.
This issue is to create a (preferably manual) job in live environments for running the quarantine tests.
Edited by Sanad Liaquat