Add stage to run stress tests in downstream pipeline for each commit
RFC: https://docs.google.com/document/d/1KB8zIltJK2stjgXlf3It7BxzB9ML1V9zeZ6hUn9-9cc/edit#heading=h.uz5ik44kpw3d
Target branch: master
Changes should be cherry-picked to 24.2: no
Docs follow-up: not necessary