Add pr-retest slash command for retesting failed e2e jobs

[jluhrsen]

Add pr-retest slash command for retesting failed e2e jobs

This /slash command will analyze a PR and provide some summary
about payload jobs or required e2e jobs status and options for
re-running which it can do automatically.

the user will need to have the gh cli installed and working for
this to be able to write comments on the PRs

Assisted-by: Claude Code
Signed-off-by: Jamo Luhrsen <[email protected]>

Some future work I want to add:

• analyze the history of job failures to look for possibly perma-failing jobs
  -- possible compare actual test case failures since perma-failing test cases are more indicative of a broken PR than just a job permafailing in general which could be due to infra issues, for example

screen shot

[openshift-ci]

[APPROVALNOTIFIER] This PR is NOT APPROVED

This pull-request has been approved by: jluhrsen
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[openshift-ci]

@jluhrsen: The following tests failed, say /retest to rerun all failed tests or /retest-required to rerun all mandatory failed tests:

Test name	Commit	Details	Required	Rerun command
ci/prow/e2e-metal-ipi-ovn-dualstack-bgp-local-gw	4883cd7	link	true	/test e2e-metal-ipi-ovn-dualstack-bgp-local-gw
ci/prow/e2e-gcp-ovn-techpreview	4883cd7	link	true	/test e2e-gcp-ovn-techpreview
ci/prow/lint	4883cd7	link	true	/test lint
ci/prow/security	4883cd7	link	false	/test security
ci/prow/4.21-upgrade-from-stable-4.20-e2e-aws-ovn-upgrade-ipsec	4883cd7	link	false	/test 4.21-upgrade-from-stable-4.20-e2e-aws-ovn-upgrade-ipsec
ci/prow/e2e-aws-ovn-windows	4883cd7	link	true	/test e2e-aws-ovn-windows

Full PR test history. Your PR dashboard.

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