Service.Register "meta" keyword implemented

[magli184]

When registering a service using the local consul agent and a .json file, I can register a service with a meta data field.
However through python (v.1.1.0) this parameter is not supported (TypeError: register() got an unexpected keyword argument 'meta').

Could this please be added, as it is required by other frameworks (Spring boot)?

Let me know if I need to clarify anything.