We need access to gcloud to run FTL tests. On the Cirrus side we do this in the Dockerfile, which for most things we have been replacing with cipd packages. However, for gcloud the existing cipd package isn't in the Flutter-owned location, so we can't just reference it in the dependencies section of .ci.yaml.

To avoid making a duplicate cipd package, my plan is to explore having a property we can set in .ci.yaml that will trigger using recipe_modules/gcloud/api.py to install gcloud. If I'm understanding that code correctly, once it's installed we can run it from gcloud/bin/gcloud.