fix(@nguniversal/common): correctly construct host string

Partially addresses #2108

(cherry picked from commit ecf9db1)

Author: alan-agius4

modules/common/clover/server/src/server-engine.ts

@@ -113,7 +113,7 @@ export class Engine {
       }
 
       const content = dom.serialize();
-      if (!options.inlineCriticalCss) {
+      if (!inlineCriticalCss) {
         return content;
       }
 

modules/common/schematics/ng-add/files/src/server.ts.template

@@ -4,7 +4,7 @@ import { join } from 'path';
 import { format } from 'url';
 
 const PORT = 4200;
-const HOST = `http://localhost:${PORT}`;
+const HOST = `localhost:${PORT}`;
 const DIST = join(__dirname, '../browser');
 
 const app = express();
@@ -37,5 +37,5 @@ app.get('*', (req, res, next) => {
 });
 
 app.listen(PORT, () => {
-  console.log(`Node Express server listening on ${HOST}`);
+  console.log(`Node Express server listening on http://${HOST}`);
 });