Add a QA spec for RBAC cluster and auto devops

What does this MR do?

Adds a QA spec for RBAC cluster and auto devops

What are the relevant issue numbers?

#52116 (closed)

Does this MR meet the acceptance criteria?

• [-] Changelog entry added, if necessary
• [-] Documentation created/updated
• Tests added for this feature/bug
• Conforms to the code review guidelines
• Conforms to the merge request performance guidelines
• Conforms to the style guides
• Conforms to the database guides

#52116 (closed)