Skip scheduling pull mirrors for free public projects
What does this MR do and why?
The public projects are returned by the query, however individual Project#mirror?
returns false
for them. As a result, the query returns additional results that are filtered afterward.
We put the functionality behind FF and continue the investigation from the product perspective.
Feature flag: skip_scheduling_mirrors_for_free
Related issue: gitlab-com/gl-infra/production#7420 (closed)