Null response when making GET request to list services associated with a gateway

So @blake this is actually very interesting, the tests are passing now, and I am not getting a null error when asserting on ingress-gateway, terminating-gateway or gateway-service.

Correctas! - Con error:     0, Superado:   210, Omitido:    18, Total:   228, Duración: 4 m 10 s - Consul.Test.dll (net461)

The only thing that I don’t get completely is why when I make curl requests to the endpoint, I just get this:

C:\Users\jvela>curl http://127.0.0.1:8500/v1/catalog/gateway-services/ingress-gateway
[]
C:\Users\jvela>curl http://127.0.0.1:8500/v1/catalog/gateway-services/terminating-gateway
[]
C:\Users\jvela>curl http://127.0.0.1:8500/v1/catalog/gateway-services/gateway-service
[]