Fix Ansible callback format

[priteau]

This should fix the issue seen in https://github.com/stackhpc/stackhpc-release-train/actions/runs/20717877180/job/59473499537

[gemini-code-assist]

Summary of Changes

Hello @priteau, I'm Gemini Code Assist¹! I'm currently reviewing this pull request and will post my feedback shortly. In the meantime, here's a summary to help you and other reviewers quickly get up to speed!

This pull request addresses an issue with Ansible's callback mechanism by updating the configuration file. The change ensures that Ansible correctly formats its output, resolving a previously encountered problem in automated workflows.

Highlights

• Ansible Configuration Update: The ansible.cfg file has been modified to update the method for handling Ansible callbacks. The stdout_callback parameter was replaced with callback_result_format.
• Issue Resolution: This change is intended to fix a specific issue related to Ansible callback formatting that was observed in a GitHub Actions run, as referenced in the pull request description.

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[gemini-code-assist]

Code Review

This pull request addresses a failure in the Ansible execution by updating the configuration to handle a deprecated callback plugin. The change replaces stdout_callback = community.general.yaml with callback_result_format = yaml. While this should resolve the error by producing YAML output, it's a different approach than what the Ansible deprecation message explicitly recommends. I've added a suggestion to use stdout_callback = yaml instead, as it's a more direct and clearer replacement for the old setting, aligning with the official guidance.

[Alex-Welsh]

See also https://github.com/stackhpc/stackhpc-release-train/pull/459/changes

I'm happy to approve this one if you also fix the one in the base ansible.cfg

[priteau]

See also https://github.com/stackhpc/stackhpc-release-train/pull/459/changes

I'm happy to approve this one if you also fix the one in the base ansible.cfg

You beat me to it!

[Alex-Welsh]

rerun of failed workflow https://github.com/stackhpc/stackhpc-release-train/actions/runs/20718504295