RFC-0004: add section about proxy

Signed-off-by: Sanskar Jaiswal <jaiswalsanskar078@gmail.com>

rfcs/0004-insecure-http/README.md

@@ -111,9 +111,16 @@ for the required commands, which will be used for specifying the value of `.spec
 > Note: This flag should not be confused with `--insecure-skip-tls-verify` which is meant to skip TLS verification
 > when using an HTTPS connection.
 
+### Proxy
+
+The flag shall also respect all possible proxy configurations. If HTTP requests are blocked, then specifying the
+`HTTP_PROXY` environment variable to the controller will lead to an error. Similarly, if a proxy is specified using the
+object's API, such as `.spec.proxy` in `Provider` and the proxy URL has `http` as it's scheme, the controller will
+raise an error.
+
 ### Precedence & Validity
 
-Objects with `.spec.insecure` as `true ` will only be allowed if HTTP connections are allowed at the controller level.
+Objects with `.spec.insecure` as `true` will only be allowed if HTTP connections are allowed at the controller level.
 Similarly, an object can have `.spec.insecure` as `true` only if the Saas/Cloud provider allows HTTP connections.
 For example, using a `Bucket` with its `.spec.provider` set to `azure` would be invalid since Azure doesn't allow
 HTTP connections.