get_service_config_path

Helper to pull in information from the config layer with fallback to interface.server.default_path.

The method looks for the parameter config_path first, if this is not set, it reads interface and server from the context and adds the value given as parameter to the method as last path component. If you need to add more than one path element pass as array ref.

The return value is an array ref with the full path that can be given to the config layer. A configuration_error will occur if the method is unable to build the path due to missing input data.