Sandbox Mode: request status, surge multiplier & driver's availability

[agraebe]

Thanks to this post on ST, a bug was identified:

The methods requests.setStatusByID, products.setDriversAvailabilityByID and products.setSurgeMultiplierByID send HTTP requests to the wrong URL, e.g.:
https://sandbox-api.uber.com/v1/requests/{request_id}

While the base URL is correct, the endpoint requires another hierarchy, like that:
https://sandbox-api.uber.com/v1/sandbox/requests/{request_id}