Yashasvi Yadav 62f500fb2e feat: add GCP zone outage rollback support (#1200)
Add rollback functionality for GCP zone outage scenarios following the
established rollback pattern (Service Hijacking, PVC, Syn Flood).

- Add @set_rollback_context_decorator to run()
- Set rollback callable before stopping nodes with base64/JSON encoded data
- Add rollback_gcp_zone_outage() static method with per-node error handling
- Fix missing poll_interval argument in starmap calls
- Add unit tests for rollback and run methods

Closes #915

Signed-off-by: YASHASVIYADAV30 <yashasviydv30@gmail.com>
Co-authored-by: Paige Patton <64206430+paigerube14@users.noreply.github.com>
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Krkn aka Kraken

Workflow-Status coverage action OpenSSF Best Practices

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Chaos and resiliency testing tool for Kubernetes. Kraken injects deliberate failures into Kubernetes clusters to check if it is resilient to turbulent conditions.

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Description
Chaos and resiliency testing tool for Kubernetes with a focus on improving performance under failure conditions. A CNCF sandbox project.
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