User can specify any bind address in Kafka Inlets

[davide-baldo]

Currently, Kafka Inlets are returning to the client the bind address when specifying how to connect to a broker. This prevents from using any bind address which is not an accessible address (127.0.0.1 or 192.168.0.1 are ok, but any mask like 0.0.0.0 is not).
Kafka server solves the issue by using the concept of "advertised address", which is independent from the bind address and it's just returned to the client as-is. We should implement it.