Flakiness monitoring #2169
Description
We should monitor build/test flakiness in CI (particularly innerloop) to detect new issues in jobs that perform retries and to make it easier to justify closing old issues.
- May share some details with other monitoring: Performance monitoring #2154
- Would help close out issues like darwin 1.24 darwincrypto flaky innerloop: Test/nilptr.go
panic: dummy too far out#1611