[api] Do not listen on any

[ronanjs]

Currently, the API server is listening on ANY

        Address addr(IP::any(Ipv6::supported()), Port(port));

It should be possible to make it listen on selected IP only. Eg using this kind if config:

modules:
  api:
    address: 127.0.0.1
    port: 9008

[ronanjs]

Solved with 7567fc0