WHAT

A public kafka should be an option for private ROSAs.

WHY

<Why is this task being done?>

HOW

If the private ROSA is not configured to have a public DNS, then the DNS entries created by the control plane need to be based upon the NLB hostname, and not the ingresscontroller... name - as that will not be publicly resolvable.

Considerations with using the NLB host name:

• We're assuming the NLB is mostly stable. However we know that if it's deleted, it will come back with a different name. The control plane I believe only validates existing dns entries. It would need to update them if we want to account for this.
• we could use this approach always, rather than using the ingresscontroller hostname. This will be preferred if we switch to a strategy of using load-balancer services, or using Kubernetes Ingress backed by an ALB.

cc gryan@redhat.com keithbwall rhn-engineering-rareddy mchitimb-1