Improve flakiness reporting by storing flaky run report with failed test name and failure message

[michalvavrik]

Summary

This is the first step to improve flakiness reporting. I need to have the file that we can inspect. Later I can experiment on commenting etc..

Tested: https://github.com/quarkus-qe/quarkus-test-suite/actions/runs/11019026504?pr=2045

Please select the relevant options.

• Bug fix (non-breaking change which fixes an issue)
• Dependency update
• Refactoring
• Backport
• New scenario (non-breaking change which adds functionality)
• This change requires a documentation update
• This change requires execution against OCP (use run tests phrase in comment)

Checklist:

• Methods and classes used in PR scenarios are meaningful
• Commits are well encapsulated and follow the best practices

[github-actions]

Following jobs contain at least one flaky test: 'PR - Linux - JVM build - Latest Version', 'PR - Linux - Native build - Latest Version', 'PR - Windows - JVM build - Latest Version'

[mjurc]

LGTM

[michalvavrik]

Ignore next comment, I am just testing formatting for myself.

[michalvavrik]

Following jobs contain at least one flaky test: 'PR - Linux - JVM build - Latest Version', 'PR - Linux - Native build - Latest Version', 'PR - Windows - JVM build - Latest Version'

Artifact flaky-run-report-whatever-1 contains following failures:

• Test name: io.quarkus.qe.reporter.flakyrun.FlakyTest.testFlaky
  Date and time: 2024-09-25T18:26:07.744582807+02:00[Europe/Prague]
  Failure message: failing to test flakiness reporting
  Failure stacktrace:

org.opentest4j.AssertionFailedError: failing to test flakiness reporting
	at org.junit.jupiter.api.AssertionUtils.fail(AssertionUtils.java:38)
	at org.junit.jupiter.api.Assertions.fail(Assertions.java:138)
	at io.quarkus.qe.reporter.flakyrun.FlakyTest.testFlaky(FlakyTest.java:18)
	at java.base/java.lang.reflect.Method.invoke(Method.java:580)
	at java.base/java.util.ArrayList.forEach(ArrayList.java:1596)
	at java.base/java.util.ArrayList.forEach(ArrayList.java:1596)

Artifact 'flaky-run-report-whatever-2' contains following failures:
Test name: io.quarkus.qe.reporter.flakyrun.FlakyTest.testFlaky
Date and time: 2024-09-25T18:26:07.744582807+02:00[Europe/Prague]
Failure message: failing to test flakiness reporting
Failure stacktrace:

org.opentest4j.AssertionFailedError: failing to test flakiness reporting
	at org.junit.jupiter.api.AssertionUtils.fail(AssertionUtils.java:38)
	at org.junit.jupiter.api.Assertions.fail(Assertions.java:138)
	at io.quarkus.qe.reporter.flakyrun.FlakyTest.testFlaky(FlakyTest.java:18)
	at java.base/java.lang.reflect.Method.invoke(Method.java:580)
	at java.base/java.util.ArrayList.forEach(ArrayList.java:1596)
	at java.base/java.util.ArrayList.forEach(ArrayList.java:1596)