nixos/nginx: allow recommended proxy settings to be enabled per location

nixos/modules/services/web-servers/nginx/location-options.nix

@@ -3,7 +3,7 @@
 # has additional options that affect the web server as a whole, like
 # the user/group to run under.)
 
-{ lib }:
+{ lib, config }:
 
 with lib;
 
@@ -128,5 +128,14 @@ with lib;
         a greater priority.
       '';
     };
+
+    recommendedProxySettings = mkOption {
+      type = types.bool;
+      default = config.services.nginx.recommendedProxySettings;
+      defaultText = literalExpression "config.services.nginx.recommendedProxySettings";
+      description = ''
+        Enable recommended proxy settings.
+      '';
+    };
   };
 }