1. Proposed title of this feature request
Allow PROXY protocol from Ingress Controller pods to applications pods for the passthrough routes.

2. What is the nature and description of the request?
Enhancement, Currently passthrough routes do not have a way to allow proxy protocol because of this TLS termination mode, which cannot be changed for our use-case, the client IP cannot be passed to the application because the ingress controller pod cannot manipulate the HTTP `x-forwarder-for` header within encrypted TLS traffic.

3. Why does the customer need this? (List the business requirements here)
Customer have absolute need of the client IP to debug, operate and log for audit purpose.

4. List any affected packages or components.
IngressController
Router
HAProxy