Is it possible to customize gateways.istio-ingressgateway.servers?

Environments
1

I’m trying to launch a fresh cluster in a manner that will let me bring up it via CI, without a whole lot of patching. I’ve found that disabling the ingress gateway entirely and creating a custom one works but ends up with a lot of info level messages in the istiod logs. If I can customize the ingressgateway a little further, that would make this work. (The 1.5 release announcement mentioned something about CI but I believe it also said it wasn’t documented yet or wasn’t well documented…)

The end result of what I’m trying to do would look like this:

apiVersion: networking.istio.io/v1alpha3
kind: Gateway
metadata:
  name: ingressgateway
  namespace: istio-system
  labels:
    release: istio
spec:
  selector:
    istio: ingressgateway
  servers:
  - hosts:
    - '*'
    port:
      name: http
      number: 80
      protocol: HTTP
  - hosts:
    - '*'
    port:
      name: https
      number: 443 
      protocol: HTTPS
    tls:
      credentialName: istio-ingressgateway-certs
      mode: SIMPLE
      privateKey: sds 
      serverCertificate: sds 
  - hosts:
    - '*'
    port:
      name: grpc
      number: 8081
      protocol: GRPC

I’ve tried mucking around with the IstioControlPlane resource but no luck. I assume I’m just missing something.