Because of the way LUCI task running is structured, we can't just push secrets into the environment at the top level of the CI and then access them as-needed because they would end up in the logs. For FTL we already provide it as a file, but for the Google Maps API key the plugin's build in relying on it being in the environment as MAPS_API_KEY.

We'll need to build a way to map files to env variables within the tooling itself, so that it is only in the environment within the task, not at the higher level that gets printed out.