ci: Multi-tenancy for tests and garbage collection
Hey @pablo-garay , this is an proposal how we could make our CI pipeline a bit more stable. We should/could isolate folders that are being written to, and garbage-collect them by `if: always()` steps.

The only caveat I can see is that templating our tests might become a little bit more tricky. But I don't think it would be a blocker. See #9177 for reference Fantastic proposal

We need this for all tests whose name start with prefix: **L2_Community_LLM_Checkpoints_tests_**
Could you please kindly make the proposed change & add for the other tests? :)
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More robust CI pipeline by creating isolated directories for job-outputs.

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