1. Proposed title of this feature request.
Support Http Addon Scaling Target for the Custom Metrics Autoscaler.

2. What is the nature and description of the request?
Custom Metrics Autoscaler to add support for using the Http Addon scaler.

3. Why does the customer need this? (List the business requirements here).
Customer is looking for a holistic solution to scale their various applications. Supporting Http Addon scaler with CMA helps support that goal. 

4. List any affected packages or components.
KEDA / CMA