Add redirectToHttps DSL Configurer

Closes gh-16679

docs/modules/ROOT/pages/servlet/exploits/http.adoc

@@ -27,9 +27,7 @@ public class WebSecurityConfig {
 	public SecurityFilterChain filterChain(HttpSecurity http) throws Exception {
 		http
 			// ...
-			.requiresChannel(channel -> channel
-				.anyRequest().requiresSecure()
-			);
+			.redirectToHttps(withDefaults());
 		return http.build();
 	}
 }
@@ -47,9 +45,7 @@ class SecurityConfig {
     open fun filterChain(http: HttpSecurity): SecurityFilterChain {
         http {
             // ...
-            requiresChannel {
-                secure(AnyRequestMatcher.INSTANCE, "REQUIRES_SECURE_CHANNEL")
-            }
+            redirectToHttps { }
         }
         return http.build()
     }