build(aio): update to @angular/cli@6.0.0-rc.2 + project layout update (#23234)

project layout was updated using:
yarn ng update @angular/cli --migrate-only --from=1.7.3

PR Close #23234

aio/tools/cli-patches/patch.js

@@ -1,10 +1,9 @@
 const fs = require('fs');
 const sh = require('shelljs');
 
-const PATCH_LOCK = 'node_modules/@angular/cli/models/webpack-configs/.patched';
+const PATCH_LOCK = 'node_modules/@angular/cli/.patched';
 
 if (!fs.existsSync(PATCH_LOCK)) {
-  sh.exec('patch -p0 -i tools/cli-patches/webpack-no-global.patch');
   sh.touch(PATCH_LOCK);
 }
 

aio/tools/cli-patches/webpack-no-global.patch

@@ -1,16 +0,0 @@
---- node_modules/@angular/cli/models/webpack-configs/browser.js	2017-11-01 12:07:56.000000000 +0100
-+++ node_modules/@angular/cli/models/webpack-configs/browser.js	2017-11-01 12:08:12.000000000 +0100
-@@ -104,11 +104,11 @@
-         ].concat(extraPlugins),
-         node: {
-             fs: 'empty',
--            global: true,
-+            global: false,
-             crypto: 'empty',
-             tls: 'empty',
-             net: 'empty',
--            process: true,
-+            process: false,
-             module: false,
-             clearImmediate: false,
-             setImmediate: false