feat(ansible-cfg): enable profile_roles callback for role-level timing metrics

[Valkyrie00]

Summary

This PR adds the ansible.posix.profile_roles callback to ansible.cfg to enable automatic role-level timing
aggregation in CI-Framework jobs.

Ref: "OSPRH-21380"

Motivation

Currently, CI-Framework jobs use profile_tasks which shows only the top ~20 slowest individual tasks. This
makes it difficult to:

• Understand total time spent in each role (requires manual summation)
• Identify roles with many small tasks (they don't appear in top N)
• Analyze bottlenecks at the role level
• Get visibility into subprocess playbook executions

Solution

The profile_roles callback automatically aggregates all tasks by role and displays total time per role at the
end of playbook execution. This provides:

• ✅ Automatic aggregation - No manual calculation needed
• ✅ Complete visibility - All roles shown, not just top N tasks
• ✅ Multi-level analysis - Works in both main and subprocess playbooks
• ✅ Zero overhead - Pure reporting enhancement, no performance impact
• ✅ Backward compatible - Works alongside existing profile_tasks

Validation

• ✅ Tested locally with minimal playbook
• ✅ Validated in production uni[01/02/04]alpha job
• ✅ Confirmed backward compatibility

Documentation

Detailed analysis, validation results are availabe in a dedicated internal document

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