Add sanity gitlab migration spec without orchestrated setup requirement

What does this MR do and why?

Adds one project migration spec which acts as sanity test since it can run against review-app or staging (promote to reliable once proven stable)

MR acceptance checklist

This checklist encourages us to confirm any changes have been analyzed to reduce risks in quality, performance, reliability, security, and maintainability.

• I have evaluated the MR acceptance checklist for this MR.