Regression tracker must retry test 1-2 times before registering regression

Before registering regression in "[regression_tracker.py](https://github.com/kernelci/kernelci-pipeline/blob/main/src/regression_tracker.py)" - send retry to test, to make sure it is not flaky test of test lab glitch.

Start with src/regression_tracker.py and trace where a regression is registered after a test result. Review the surrounding flow to determine how a test can be retried one or two times before registration. Done means transient failures or lab glitches receive the requested retries before a regression is recorded.

Written by the indexing model from the issue text.