build(@angular/cli): fix @angular dep warnings

We still need these dependencies as they are peerDeps of @ngtools/webpack.

Partially revert angular#4473
Fix angular#4575

Author: filipesilva

packages/@angular/cli/package.json

@@ -26,6 +26,10 @@
   },
   "homepage": "https://github.com/angular/angular-cli",
   "dependencies": {
+    "@angular/compiler": "^2.3.1",
+    "@angular/compiler-cli": "^2.3.1",
+    "@angular/core": "^2.3.1",
+    "@angular/tsc-wrapped": "^0.5.0",
     "@ngtools/json-schema": "1.0.3",
     "@ngtools/webpack": "1.2.9",
     "async": "^2.1.4",