Restore ability to run some tests using CoreCLR

- revert part of "Made a few more changes since we have new tooling"
- was commit b1fd5cc689

test/Microsoft.AspNet.Mvc.ModelBinding.Test/project.json

@@ -25,6 +25,21 @@
         "System.Reflection": "",
         "System.Runtime.Serialization": ""
       }
+    },
+    "k10" : { 
+      dependencies: {
+        "System.Collections": "4.0.0.0",
+        "System.ComponentModel": "4.0.0.0",
+        "System.Globalization": "4.0.10.0",
+        "System.Linq": "4.0.0.0",
+        "System.Reflection": "4.0.10.0",
+        "System.Runtime": "4.0.20.0",
+        "System.Runtime.Extensions": "4.0.10.0",
+        "System.Runtime.Serialization.Primitives": "4.0.0.0",
+        "System.Threading": "4.0.0.0",
+        "System.Threading.Tasks": "4.0.10.0",
+        "System.Threading.Thread": "4.0.0.0"
+      }
     }
   }
 }