/v1/catalog/service/:service_name 404

[sbaildon]

Feature Description

Return 404 when service_name does not exist in catalogue query /v1/catalog/service/:service_ name

As of today, consul returns 200 whether the service exists or not — returning an empty result set, [], if the service isn't present

Use Case(s)

I want to handle the presence or absence of a service differently, and using the HTTP status code would be easier than matching on an empty result set