feat(@schematics/angular): generate E2E tests with native promise support

This change adjusts the E2E schematic to generate a protractor configuration with the selenium promise manager disabled.  It also adjusts the generated test files to use native promises and async/await to control test execution.

Author: clydin

packages/schematics/angular/e2e/files/protractor.conf.js.template

@@ -16,6 +16,7 @@ exports.config = {
     browserName: 'chrome'
   },
   directConnect: true,
+  SELENIUM_PROMISE_MANAGER: false,
   baseUrl: 'http://localhost:4200/',
   framework: 'jasmine',
   jasmineNodeOpts: {

packages/schematics/angular/e2e/files/src/app.e2e-spec.ts.template

@@ -8,9 +8,9 @@ describe('workspace-project App', () => {
     page = new AppPage();
   });
 
-  it('should display welcome message', () => {
-    page.navigateTo();
-    expect(page.getTitleText()).toEqual('<%= relatedAppName %> app is running!');
+  it('should display welcome message', async () => {
+    await page.navigateTo();
+    expect(await page.getTitleText()).toEqual('<%= relatedAppName %> app is running!');
   });
 
   afterEach(async () => {

packages/schematics/angular/e2e/files/src/app.po.ts.template

@@ -1,11 +1,11 @@
 import { browser, by, element } from 'protractor';
 
 export class AppPage {
-  navigateTo(): Promise<unknown> {
-    return browser.get(browser.baseUrl) as Promise<unknown>;
+  async navigateTo(): Promise<unknown> {
+    return browser.get(browser.baseUrl);
   }
 
-  getTitleText(): Promise<string> {
-    return element(by.css('<%= rootSelector %> .content span')).getText() as Promise<string>;
+  async getTitleText(): Promise<string> {
+    return element(by.css('<%= rootSelector %> .content span')).getText();
   }
 }

packages/schematics/angular/e2e/files/tsconfig.json.template

@@ -7,7 +7,6 @@
     "target": "es2018",
     "types": [
       "jasmine",
-      "jasminewd2",
       "node"
     ]
   }

packages/schematics/angular/workspace/files/package.json.template

@@ -25,8 +25,7 @@
   "devDependencies": {
     "@angular/cli": "<%= '~' + version %>",
     "@angular/compiler-cli": "<%= latestVersions.Angular %>",<% if (!minimal) { %>
-    "@types/jasmine": "~3.5.0",
-    "@types/jasminewd2": "~2.0.3",<% } %>
+    "@types/jasmine": "~3.5.0",<% } %>
     "@types/node": "^12.11.1",<% if (!minimal) { %>
     "codelyzer": "^6.0.0",
     "jasmine-core": "~3.6.0",