BUG: query fails when passing a valid API key

[keithcom]

In the sandbox env, the following query succeeds:
curl -X GET "https://30lxcuxu8d.execute-api.us-east-1.amazonaws.com/sandbox/dogs/isl15_ks84"

But it returns an empty object if you pass a valid API key value in the headers:
curl -X GET "https://30lxcuxu8d.execute-api.us-east-1.amazonaws.com/sandbox/dogs/isl15_ks84" --header "x-dogs-api-key: <sandbox key from 1Password>"

[iandvt]

@ryan-roemer && @kevinmstephens - This PR will expose a function that can be called on lambda start to persist/update the default data in S3