Use Case: improve Cache hit ratio on backend servers / upstream servers by using sticky sessions based on request URL

Feature request: add a Hash Policy Specifier "URI" in HTTP LB >> Load Balancing Algorithm : Ring Hash Policy >> Hash Policy Rule

Current workaround on a reverse-proxy: a NGINX instance in vK8S that will add a header x-url and add a HTTP LB between NGINX and originn server with a consistent hashing policy based on header x-url

Current workaround using JS injection for web browser client: https://github.com/istio/istio/issues/11554