HDDS-12715. add integration tests for debug-replicas-verify-checksums tool

[ptlrs]

Please describe your PR in detail:

1. Implemented an Extension class which creates the miniozonecluster that can be reused
2. Implemented an integration test for the ozone debug replicas verify checksums command
3. Refactored TestOzoneDebugShell to use the Extension class

What is the link to the Apache JIRA

https://issues.apache.org/jira/browse/HDDS-12715

How was this patch tested?

CI: https://github.com/ptlrs/ozone/actions/runs/15119784564

[adoroszlai]

Thanks @ptlrs for working on this.

Moving cluster creation to an extension reduces duplication, but:

• test execution is still unnecessarily long, because each test class needs to start its own cluster
• the specific implementation does not allow config to be customized if needed

Please check TestOzoneIntegrationNonHA and its parent classes for a better way to reuse a shared cluster for multiple test classes (HDDS-12183 and several later sub-tasks of HDDS-9000).

[ptlrs]

Thanks for the review @adoroszlai.
I agree, the cluster config here is limited to what is set in the extension.

With the custom extension, the cluster is created only once for both the test classes. The cluster is initialized once and stored as a static member. I had confirmed this by logging the creation of MiniOzoneCluster.

Is the goal of the new approach to consolidate all tests that can reuse the same config/cluster?

[ptlrs]

Hi @adoroszlai, the PR has been updated to use the existing TestOzoneIntegrationNonHA class. Could you please take another look.

[adoroszlai]

Thanks @ptlrs for updating the patch.

I think the PR title also needs to be updated.