chore(greenkeeper): add ignores for angular dev deps

Author: christopherthielen

package.json

@@ -108,5 +108,17 @@
     "webpack-dev-server": "2.9.7",
     "webpack-visualizer-plugin": "^0.1.10",
     "zone.js": "^0.8.18"
+  },
+  "greenkeeper": {
+    "ignore": [
+      "@angular/common",
+      "@angular/compiler",
+      "@angular/compiler-cli",
+      "@angular/core",
+      "@angular/platform-browser",
+      "@angular/platform-browser-dynamic",
+      "@angular/platform-server",
+      "@angular/router"
+    ]
   }
 }