feat(@schematics/angular): enable lazy loading on the server for new projects

With this change, lazy-loading on the server becomes enabled out of the box for new projects. This is because webpack will only split ES6 imports into separate chunks. However when using commonjs all lazy loaded paths will be concatenated into the main.js file.

packages/schematics/angular/universal/files/root/__tsconfigFileName__.json.template

@@ -2,7 +2,6 @@
   "extends": "./<%= tsConfigExtends %>",
   "compilerOptions": {
     "outDir": "<%= outDir %>-server",
-    "module": "commonjs",
     "types": [
       "node"
     ]

packages/schematics/angular/universal/index_spec.ts

@@ -91,7 +91,6 @@ describe('Universal Schematic', () => {
       extends: './tsconfig.app.json',
       compilerOptions: {
         outDir: './out-tsc/app-server',
-        module: 'commonjs',
         types: ['node'],
       },
       files: [
@@ -116,7 +115,6 @@ describe('Universal Schematic', () => {
       extends: './tsconfig.app.json',
       compilerOptions: {
         outDir: '../../out-tsc/app-server',
-        module: 'commonjs',
         types: ['node'],
       },
       files: [

tests/angular_devkit/build_angular/hello-world-app-ve/src/tsconfig.server.json

@@ -2,7 +2,6 @@
   "extends": "./tsconfig.app.json",
   "compilerOptions": {
     "outDir": "../dist-server",
-    "module": "commonjs",
     "types": []
   },
   "files": [

tests/angular_devkit/build_angular/hello-world-app/src/tsconfig.server.json

@@ -3,7 +3,6 @@
   "compilerOptions": {
     "outDir": "../dist-server",
     "baseUrl": "./",
-    "module": "commonjs",
     "types": []
   },
   "files": [