MPT-18372 Add helpdesk parameter groups API services with unit and e2e test coverage

[jentyk]

Summary

• Add sync/async Helpdesk Parameter Groups services for /public/v1/helpdesk/parameter-groups
• Add sync/async nested Parameter Group Parameters services for /public/v1/helpdesk/parameter-groups/{group_id}/parameters
• Expose new helpdesk.parameter_groups entrypoint on sync and async Helpdesk clients
• Add unit tests for service wiring, endpoint paths, mixin methods, and nested .parameters(group_id) factory
• Add e2e test suites for parameter groups and nested group parameters (sync/async), marked flaky and skipped

Testing

• make check-all

Closes MPT-18372

Release Notes

• Added synchronous and asynchronous Helpdesk Parameter Groups services for endpoint /public/v1/helpdesk/parameter-groups with full CRUD operations and pagination support
• Added synchronous and asynchronous nested Parameter Group Parameters services for endpoint /public/v1/helpdesk/parameter-groups/{group_id}/parameters with factory method access via .parameters(group_id)
• Exposed new helpdesk.parameter_groups entrypoint on both sync and async Helpdesk client classes
• Added comprehensive unit tests covering service instantiation, endpoint path validation, mixin method availability, and nested factory method behavior
• Added end-to-end test suites for parameter groups and nested group parameters (both sync and async variants), marked as flaky and skipped pending issue MPT-18373 resolution

[coderabbitai]

Important

Review skipped

Draft detected.

Please check the settings in the CodeRabbit UI or the .coderabbit.yaml file in this repository. To trigger a single review, invoke the @coderabbitai review command.

⚙️ Run configuration

Configuration used: Repository YAML (base), Organization UI (inherited)

Review profile: CHILL

Plan: Pro

Run ID: eec54226-4fff-4b4b-94f7-55014cee5ea8

You can disable this status message by setting the reviews.review_status to false in the CodeRabbit configuration file.

Use the checkbox below for a quick retry:

• ✅ Review completed - (🔄 Check again to review again)

---

_{Comment @coderabbitai help to get the list of available commands and usage tips.}

[sonarqubecloud]

Quality Gate passed

Issues
0 New issues
0 Accepted issues

Measures
0 Security Hotspots
100.0% Coverage on New Code
0.0% Duplication on New Code

See analysis details on SonarQube Cloud