What does this MR do?
Implement environment-specific variables
Screenshots (if relevant)
Does this MR meet the acceptance criteria?
- Changelog entry added, if necessary
- Documentation created/updated
- API support added
- Added for this feature/bug
- Update doc to be consistent with protected_branches/tags
Decide if we should go with
- Backport to CE
What are the relevant issue numbers?
Closes #2302 (closed)