update to 2.1 (dotnet#9178)

Author: Rick Anderson

aspnetcore/data/ef-rp/intro/samples/cu/ContosoUniversity.csproj

@@ -1,14 +1,10 @@
-<Project Sdk="Microsoft.NET.Sdk.Web">
+<Project Sdk="Microsoft.NET.Sdk.Web">
   <PropertyGroup>
-    <TargetFramework>netcoreapp2.0</TargetFramework>
+    <TargetFramework>netcoreapp2.1</TargetFramework>
   </PropertyGroup>
   <ItemGroup>
-    <PackageReference Include="Microsoft.AspNetCore.All" Version="2.1.4" />
-    <PackageReference Include="Microsoft.VisualStudio.Web.CodeGeneration.Design" Version="2.0.0" />
-    <PackageReference Include="Microsoft.VisualStudio.Web.CodeGeneration.Utils" Version="2.0.0" />
-  </ItemGroup>
-  <ItemGroup>
-    <DotNetCliToolReference Include="Microsoft.VisualStudio.Web.CodeGeneration.Tools" Version="2.0.0" />
-    <DotNetCliToolReference Include="Microsoft.EntityFrameworkCore.Tools.DotNet" Version="2.0.0" />
+    <PackageReference Include="Microsoft.AspNetCore.All" />
+    <PackageReference Include="Microsoft.VisualStudio.Web.CodeGeneration.Design" Version="2.1.5" />
+    <PackageReference Include="Microsoft.VisualStudio.Web.CodeGeneration.Utils" Version="2.1.5" />
   </ItemGroup>
 </Project>