title: Spring cloud gateway as a forward proxy
body: <p>Can we use Spring cloud gateway as a forward proxy, I tied don't it and was stuck with HTTPS traffic
  The Gateway could not support 'HTTPS - CONNECT Requests' I am aware that Netty is used underneath but like to use the other capabilities of the gateway so wanted to use it as a forward proxy</p>
  <p>Use case
  Have a few internal site URLs in gateway route rules and the rest of the URL has to be a pass-thru like how a forward proxy will work. I have a sample wild card configuration to test forward proxy setting but HTTPS traffic fails to pass thru.</p>
  <pre><code>cloud:
  gateway:
    routes:
    - id: wildcard_route
      uri: no://op
      predicates:
      - Path=/**
  </code></pre>
  <p>I need some direction on how to enable forward proxy in Spring cloud gateway</p>