1. Proposed title of this feature request

Ensure private ARO clusters with 250 to 500 nodes can add a public ingress controller

2. What is the nature and description of the request?

 There is a need for ARO clusters with 250+ nodes and public ingress controller for external access.

3. Why does the customer need this? (List the business requirements here)

Blocker to adopting ARO and onboarding large workloads and having required public ingress access.

4. List any affected packages or components.

n/a