AbstractContainerService.PortMappingProvider

The provided map contains an entry for every backend instance. For the main instance the key is the backend name and the value is the hostname:port for sending http requests to the instance (i.e. bob->127.0.0.1:1234). For other instances the key is instance-id.hostname and the value is again the hostname:port for sending http requests to the instance (i.e. 2.bob->127.0.0.1:1234).