Thanks for the sleuthing, but who does this repository belong to? I'd like to apply it but only if mozilla provides such instruction on their issue page, I don't know who the actual owner of /moz-fx-normandy-prod-addons/ is...
https://storage.googleapis.com/moz-fx-normandy-prod-addons/e...
Can mozilla please verify, confirm authenticity, and list this instruction on their issue page?