fix(@angular/cli): delete node_modules on eject e2e

And add missing dependenices when ejecting.

Author: hansl

packages/@angular/cli/tasks/eject.ts

@@ -594,6 +594,8 @@ export default Task.extend({
 
         // Update all loaders from webpack, plus postcss plugins.
         [
+          '@angular-devkit/core',
+          '@ngtools/webpack',
           'webpack',
           'autoprefixer',
           'css-loader',

tests/e2e/utils/process.ts

@@ -178,8 +178,8 @@ export function ng(...args: string[]) {
         .then(() => {
           if (!npmInstalledEject) {
             npmInstalledEject = true;
-            // We need to run npm install on the first eject.
-            return silentNpm('install');
+            // We need to delete node_modules, then run npm install on the first eject.
+            return rimraf('node_modules').then(() => silentNpm('install'));
           }
         })
         .then(() => rimraf('dist'))