build(@angular/cli): update sourcemap-istanbul-instrumenter-loader

Thanks to @deepsweet for the license update!

Followup from webpack-contrib/istanbul-instrumenter-loader#39
Partially address angular#3884

Author: filipesilva

package.json

@@ -91,7 +91,7 @@
     "silent-error": "^1.0.0",
     "source-map": "^0.5.6",
     "source-map-loader": "^0.1.5",
-    "sourcemap-istanbul-instrumenter-loader": "^0.2.0",
+    "sourcemap-istanbul-instrumenter-loader": "^2.0.0",
     "style-loader": "^0.13.1",
     "stylus": "^0.54.5",
     "stylus-loader": "^2.4.0",

packages/@angular/cli/package.json

@@ -72,7 +72,7 @@
     "semver": "^5.1.0",
     "silent-error": "^1.0.0",
     "source-map-loader": "^0.1.5",
-    "sourcemap-istanbul-instrumenter-loader": "^0.2.0",
+    "sourcemap-istanbul-instrumenter-loader": "^2.0.0",
     "style-loader": "^0.13.1",
     "stylus": "^0.54.5",
     "stylus-loader": "^2.4.0",