Add note about testing features in staging-ref
What does this MR do and why?
- Now that we can test features in staging-ref #427249 (closed)
MR acceptance checklist
This checklist encourages us to confirm any changes have been analyzed to reduce risks in quality, performance, reliability, security, and maintainability.
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I have evaluated the MR acceptance checklist for this MR.
Edited by Jessie Young