Add hierarchy group by's to Cloud realm

[eiffel777]

This PR adds the hierarchy group by's to the cloud realm.

Tests performed

Manually tested and checked in docker.

Types of changes

• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to change)

Checklist:

• My code follows the code style of this project as found in the CONTRIBUTING document.
• I have added tests to cover my changes.
• All new and existing tests passed.