Netty: Support to bind on multiple host/port pair

This PR allows to bind to more than host and port using the `bind_host` and `port` properties. You can basically create differrent profiles, which can also have different tcp and buffer settings.

TODO: Documentation, explain possible options
this should be fallbackTcpKeepAlive? Maybe we can move the creation of the client and server into 2 different methods, so this bug will not be even possible?