Upgrade test project to netcoreapp1.1

test/Microsoft.Extensions.ProjectModel.Tests/project.json

@@ -28,10 +28,10 @@
     "xunit": "2.2.0-*"
   },
   "frameworks": {
-    "netcoreapp1.0": {
+    "netcoreapp1.1": {
       "dependencies": {
         "Microsoft.NETCore.App": {
-          "version": "1.0.0",
+          "version": "1.1.0-*",
           "type": "platform"
         }
       }