feat(@angular/cli): update e2e blueprint files

Author: narainsagar

packages/@angular/cli/blueprints/ng/files/e2e/app.e2e-spec.ts

@@ -1,10 +1,10 @@
-import { <%= jsComponentName %>Page } from './app.po';
+import { AppPage } from './app.po';
 
 describe('<%= htmlComponentName %> App', () => {
-  let page: <%= jsComponentName %>Page;
+  let page: AppPage;
 
   beforeEach(() => {
-    page = new <%= jsComponentName %>Page();
+    page = new AppPage();
   });
 
   it('should display welcome message', () => {

packages/@angular/cli/blueprints/ng/files/e2e/app.po.ts

@@ -1,6 +1,6 @@
 import { browser, by, element } from 'protractor';
 
-export class <%= jsComponentName %>Page {
+export class AppPage {
   navigateTo() {
     return browser.get('/');
   }