Fix build-sync pipelines to respect custom DOOZER_DATA_PATH

[vfreex]

The build-sync pipeline was not respecting the --data-path parameter when determining supported architectures. The branch_arches() function would always use the default ocp-build-data repository instead of the custom fork/branch specified by the user.

This fix:

• Adds data_path and doozer_data_gitref parameters to branch_arches()
• Updates build_sync.py to pass these parameters
• Updates build_sync_multi.py to pass these parameters
• Ensures configuration consistency throughout the pipeline

The fix is backwards compatible with default parameter values.

[openshift-ci]

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[coderabbitai]

Walkthrough

This change adds two new parameters (data_path and doozer_data_gitref) to the branch_arches function to propagate pipeline data context. The function signature is extended with default values, and calling sites in two pipeline files pass these parameters during invocation.

Changes

Cohort / File(s)	Summary
Pipeline Updates pyartcd/pyartcd/pipelines/build_sync.py, pyartcd/pyartcd/pipelines/build_sync_multi.py	Added data_path and doozer_data_gitref keyword arguments to branch_arches calls in pipeline run() methods (+2/-0 each)
Function Signature Extension pyartcd/pyartcd/util.py	Extended branch_arches function signature to accept data_path and doozer_data_gitref parameters with defaults; updated internal load_group_config call to pass these values; added corresponding docstring entries (+15/-2)

Estimated code review effort

🎯 2 (Simple) | ⏱️ ~10 minutes

✨ Finishing touches

• 📝 Generate docstrings

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[openshift-ci]

@vfreex: The following test 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/security	fed5e9f	link	false	/test security

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