Created scheduled CI job to automatically delete stopped review environments
Description
In !53644 (merged), we created a script to delete stopped review environents, and ran it manually. This was to remove the associated git refs which can impact git/CI/Gitaly performance for the repo.
The first manual run deleted 50,000+ review environments.
This issue is to create a scheduled CI job to automatically run this script. Once a week is probably enough.
See also this comment regarding the hard performance limits of git when it comes to excessive numbers of refs: gitlab-org/gitlab#336657 (comment 838156776)
Edited by Chad Woolley