Ensure httpServerOptions gets applied to ALL the express apps

This is silly. Turns out setting options at a top level app
does not percolate down to sub apps (and vice versa). You
have to apply the options to ALL express apps.

packages/node_modules/@node-red/editor-api/lib/admin/index.js

@@ -39,6 +39,15 @@ module.exports = {
 
         var adminApp = express();
 
+        var defaultServerSettings = {
+            "x-powered-by": false
+        }
+        var serverSettings = Object.assign({},defaultServerSettings,settings.httpServerOptions||{});
+        for (var eOption in serverSettings) {
+            adminApp.set(eOption, serverSettings[eOption]);
+        }
+
+
         // Flows
         adminApp.get("/flows",needsPermission("flows.read"),flows.get,apiUtil.errorHandler);
         adminApp.post("/flows",needsPermission("flows.write"),flows.post,apiUtil.errorHandler);