chore(test): update to protractor4 (#1778)

Author: filipesilva

addon/ng2/blueprints/ng2/files/e2e/app.po.ts

@@ -1,3 +1,5 @@
+import { browser, element, by } from 'protractor/globals';
+
 export class <%= jsComponentName %>Page {
   navigateTo() {
     return browser.get('/');

addon/ng2/blueprints/ng2/files/package.json

@@ -34,7 +34,6 @@
     "preboot": "2.1.2",
     "parse5": "1.5.1",<% } %>
     "@types/jasmine": "^2.2.30",
-    "@types/protractor": "^1.5.16",
     "angular-cli": "<%= version %>",
     "codelyzer": "~0.0.26",
     "jasmine-core": "2.4.1",
@@ -43,7 +42,7 @@
     "karma-chrome-launcher": "0.2.3",
     "karma-jasmine": "0.3.8",
     "karma-remap-istanbul": "^0.2.1",
-    "protractor": "3.3.0",
+    "protractor": "4.0.3",
     "ts-node": "1.2.1",
     "tslint": "3.13.0",
     "typescript": "^2.0.0"