Show deployment information (aka support environments)

[fdw]

As a developer, it would be nice to see in which environment (development, staging, production) a specific version of a service is deployed. This could either be found out automatically (be sending a request to a specific endpoint to see which version is deployed there) or set manually.

The automatic way would mean that for each service, the maintainers would have to specify the possible URL per environment, and ApiCenter would send requests to them to receive the deployed version.