Add test pass threshold as a merge request rule
<!--IssueSummary start--> <details> <summary> Everyone can contribute. [Help move this issue forward](https://handbook.gitlab.com/handbook/marketing/developer-relations/contributor-success/community-contributors-workflows/#contributor-links) while earning points, leveling up and collecting rewards. </summary> - [Close this issue](https://contributors.gitlab.com/manage-issue?action=close&projectId=278964&issueIid=383546) </details> <!--IssueSummary end--> ### Problem to solve As an administrator, I want GitLab to automatically block the merge requests that fail too many tests. ### Proposal Add the "test-check" as a merge request rule. The project manager can set a maximum failed test. If too many test are failed, then block the merge request. | MR approvals | rule configuration | | ------ | ------ | | ![image](/uploads/30c3d87d2c2af0abcb78591d4c85cb34/image.png) |![image](/uploads/4a7bd1edeb89c36cb7e520ec52c1f5b5/image.png) | ### Intended users PMO and Quality Assurance Department
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