Only add DotNetCoreRazorConfiguration capability in SDK for netcoreapp3.0.

- Prior to this we were unconditionally adding the `DotNetCoreRazorConfiguration` capability resulting in 1.0 projects looking like 2.1+ projects.
- Added a project capability test that verifies we're maintaining project capabilities for netcoreapp3.0 projects.
- Added a project capability test that verifies we don't muck with 1.1 project capabilities.

aspnet/Razordotnet/aspnetcore-tooling#2751
\n\nCommit migrated from 8d733ecc04

src/Razor/Microsoft.NET.Sdk.Razor/src/build/netstandard2.0/Microsoft.NET.Sdk.Razor.DesignTime.targets

@@ -26,7 +26,7 @@ Copyright (c) .NET Foundation. All rights reserved.
       Defines the ability to understand the configuration for the Razor language service provided by
       the runtime/toolset packages. Introduced in 2.1
     -->
-    <ProjectCapability Include="DotNetCoreRazorConfiguration"/>
+    <ProjectCapability Include="DotNetCoreRazorConfiguration" Condition="'$(_TargetingNETCoreApp30OrLater)'=='true'"/>
   </ItemGroup>
 
   <!--

src/Razor/Microsoft.NET.Sdk.Razor/test/IntegrationTests/BuildIntrospectionTest.cs

@@ -14,6 +14,28 @@ namespace Microsoft.AspNetCore.Razor.Design.IntegrationTests
         {
         }
 
+        [Fact]
+        [InitializeTestProject("SimpleMvc11")]
+        public async Task RazorSdk_DoesNotAddCoreRazorConfigurationTo11Projects()
+        {
+            var result = await DotnetMSBuild("_IntrospectProjectCapabilityItems");
+
+            Assert.BuildPassed(result);
+            Assert.BuildOutputContainsLine(result, "ProjectCapability: DotNetCoreRazor");
+            Assert.BuildOutputDoesNotContainLine(result, "ProjectCapability: DotNetCoreRazorConfiguration");
+        }
+
+        [Fact]
+        [InitializeTestProject("SimpleMvc")]
+        public async Task RazorSdk_AddsProjectCapabilities()
+        {
+            var result = await DotnetMSBuild("_IntrospectProjectCapabilityItems");
+
+            Assert.BuildPassed(result);
+            Assert.BuildOutputContainsLine(result, "ProjectCapability: DotNetCoreRazor");
+            Assert.BuildOutputContainsLine(result, "ProjectCapability: DotNetCoreRazorConfiguration");
+        }
+
         [Fact]
         [InitializeTestProject("SimpleMvc")]
         public async Task RazorSdk_AddsCshtmlFilesToUpToDateCheckInput()

src/Razor/test/testassets/RazorTest.Introspection.targets

@@ -25,4 +25,8 @@
   <Target Name="_IntrospectGetCopyToOutputDirectoryItems">
     <Message Text="AllItemsFullPathWithTargetPath: %(AllItemsFullPathWithTargetPath.TargetPath)" Importance="High" />
   </Target>
+
+  <Target Name="_IntrospectProjectCapabilityItems">
+    <Message Text="ProjectCapability: %(ProjectCapability.Identity)" Importance="High" />
+  </Target>
 </Project>

src/Razor/test/testassets/SimpleMvc11/Program.cs

@@ -0,0 +1,13 @@
+
+namespace SimpleMvc11
+{
+    public class Program
+    {
+        public static void Main(string[] args)
+        {
+            // Just make sure we have a reference to MVC 1.1
+            var t = typeof(Microsoft.AspNetCore.Mvc.IActionResult);
+            System.Console.WriteLine(t.FullName);
+        }
+    }
+}

src/Razor/test/testassets/SimpleMvc11/SimpleMvc11.csproj

@@ -0,0 +1,23 @@
+<Project Sdk="Microsoft.NET.Sdk.Web">
+
+  <!--
+    This project references a shipped version of MVC and should not reference local builds of
+    the CodeGeneration targets, rzc, or any of the test shims.
+  -->
+
+
+  <PropertyGroup>
+    <TargetFramework>netcoreapp1.1</TargetFramework>
+  </PropertyGroup>
+
+  <!-- Test Placeholder -->
+
+  <ItemGroup>
+    <PackageReference Include="Microsoft.AspNetCore" Version="1.1.7" />
+    <PackageReference Include="Microsoft.AspNetCore.Mvc" Version="1.1.8">
+      <!-- Avoid exporting types from real MVC that will conflict with the test shim -->
+      <PrivateAssets>All</PrivateAssets>
+    </PackageReference>
+  </ItemGroup>
+
+</Project>

src/Razor/test/testassets/SimpleMvc11/Views/Home/Index.cshtml

@@ -0,0 +1,108 @@
+@{
+    ViewData["Title"] = "Home Page";
+}
+
+<div id="myCarousel" class="carousel slide" data-ride="carousel" data-interval="6000">
+    <ol class="carousel-indicators">
+        <li data-target="#myCarousel" data-slide-to="0" class="active"></li>
+        <li data-target="#myCarousel" data-slide-to="1"></li>
+        <li data-target="#myCarousel" data-slide-to="2"></li>
+        <li data-target="#myCarousel" data-slide-to="3"></li>
+    </ol>
+    <div class="carousel-inner" role="listbox">
+        <div class="item active">
+            <img src="~/images/banner1.svg" alt="ASP.NET" class="img-responsive" />
+            <div class="carousel-caption" role="option">
+                <p>
+                    Learn how to build ASP.NET apps that can run anywhere.
+                    <a class="btn btn-default" href="https://go.microsoft.com/fwlink/?LinkID=525028&clcid=0x409">
+                        Learn More
+                    </a>
+                </p>
+            </div>
+        </div>
+        <div class="item">
+            <img src="~/images/banner2.svg" alt="Visual Studio" class="img-responsive" />
+            <div class="carousel-caption" role="option">
+                <p>
+                    There are powerful new features in Visual Studio for building modern web apps.
+                    <a class="btn btn-default" href="https://go.microsoft.com/fwlink/?LinkID=525030&clcid=0x409">
+                        Learn More
+                    </a>
+                </p>
+            </div>
+        </div>
+        <div class="item">
+            <img src="~/images/banner3.svg" alt="Package Management" class="img-responsive" />
+            <div class="carousel-caption" role="option">
+                <p>
+                    Bring in libraries from NuGet, Bower, and npm, and automate tasks using Grunt or Gulp.
+                    <a class="btn btn-default" href="https://go.microsoft.com/fwlink/?LinkID=525029&clcid=0x409">
+                        Learn More
+                    </a>
+                </p>
+            </div>
+        </div>
+        <div class="item">
+            <img src="~/images/banner4.svg" alt="Microsoft Azure" class="img-responsive" />
+            <div class="carousel-caption" role="option">
+                <p>
+                    Learn how Microsoft's Azure cloud platform allows you to build, deploy, and scale web apps.
+                    <a class="btn btn-default" href="https://go.microsoft.com/fwlink/?LinkID=525027&clcid=0x409">
+                        Learn More
+                    </a>
+                </p>
+            </div>
+        </div>
+    </div>
+    <a class="left carousel-control" href="#myCarousel" role="button" data-slide="prev">
+        <span class="glyphicon glyphicon-chevron-left" aria-hidden="true"></span>
+        <span class="sr-only">Previous</span>
+    </a>
+    <a class="right carousel-control" href="#myCarousel" role="button" data-slide="next">
+        <span class="glyphicon glyphicon-chevron-right" aria-hidden="true"></span>
+        <span class="sr-only">Next</span>
+    </a>
+</div>
+
+<div class="row">
+    <div class="col-md-3">
+        <h2>Application uses</h2>
+        <ul>
+            <li>Sample pages using ASP.NET Core MVC</li>
+            <li><a href="https://go.microsoft.com/fwlink/?LinkId=518004">Bower</a> for managing client-side libraries</li>
+            <li>Theming using <a href="https://go.microsoft.com/fwlink/?LinkID=398939">Bootstrap</a></li>
+        </ul>
+    </div>
+    <div class="col-md-3">
+        <h2>How to</h2>
+        <ul>
+            <li><a href="https://go.microsoft.com/fwlink/?LinkID=398600">Add a Controller and View</a></li>
+            <li><a href="https://go.microsoft.com/fwlink/?LinkId=699315">Manage User Secrets using Secret Manager.</a></li>
+            <li><a href="https://go.microsoft.com/fwlink/?LinkId=699316">Use logging to log a message.</a></li>
+            <li><a href="https://go.microsoft.com/fwlink/?LinkId=699317">Add packages using NuGet.</a></li>
+            <li><a href="https://go.microsoft.com/fwlink/?LinkId=699318">Add client packages using Bower.</a></li>
+            <li><a href="https://go.microsoft.com/fwlink/?LinkId=699319">Target development, staging or production environment.</a></li>
+        </ul>
+    </div>
+    <div class="col-md-3">
+        <h2>Overview</h2>
+        <ul>
+            <li><a href="https://go.microsoft.com/fwlink/?LinkId=518008">Conceptual overview of what is ASP.NET Core</a></li>
+            <li><a href="https://go.microsoft.com/fwlink/?LinkId=699320">Fundamentals of ASP.NET Core such as Startup and middleware.</a></li>
+            <li><a href="https://go.microsoft.com/fwlink/?LinkId=398602">Working with Data</a></li>
+            <li><a href="https://go.microsoft.com/fwlink/?LinkId=398603">Security</a></li>
+            <li><a href="https://go.microsoft.com/fwlink/?LinkID=699321">Client side development</a></li>
+            <li><a href="https://go.microsoft.com/fwlink/?LinkID=699322">Develop on different platforms</a></li>
+            <li><a href="https://go.microsoft.com/fwlink/?LinkID=699323">Read more on the documentation site</a></li>
+        </ul>
+    </div>
+    <div class="col-md-3">
+        <h2>Run &amp; Deploy</h2>
+        <ul>
+            <li><a href="https://go.microsoft.com/fwlink/?LinkID=517851">Run your app</a></li>
+            <li><a href="https://go.microsoft.com/fwlink/?LinkID=517853">Run tools such as EF migrations and more</a></li>
+            <li><a href="https://go.microsoft.com/fwlink/?LinkID=398609">Publish to Microsoft Azure Web Apps</a></li>
+        </ul>
+    </div>
+</div>

src/Razor/test/testassets/SimpleMvc11/Views/Shared/_Layout.cshtml

@@ -0,0 +1,71 @@
+<!DOCTYPE html>
+<html>
+<head>
+    <meta charset="utf-8" />
+    <meta name="viewport" content="width=device-width, initial-scale=1.0" />
+    <title>@ViewData["Title"] - SimpleMvc11</title>
+
+    <environment names="Development">
+        <link rel="stylesheet" href="~/lib/bootstrap/dist/css/bootstrap.css" />
+        <link rel="stylesheet" href="~/css/site.css" />
+    </environment>
+    <environment names="Staging,Production">
+        <link rel="stylesheet" href="https://ajax.aspnetcdn.com/ajax/bootstrap/3.3.7/css/bootstrap.min.css"
+              asp-fallback-href="~/lib/bootstrap/dist/css/bootstrap.min.css"
+              asp-fallback-test-class="sr-only" asp-fallback-test-property="position" asp-fallback-test-value="absolute" />
+        <link rel="stylesheet" href="~/css/site.min.css" asp-append-version="true" />
+    </environment>
+</head>
+<body>
+    <nav class="navbar navbar-inverse navbar-fixed-top">
+        <div class="container">
+            <div class="navbar-header">
+                <button type="button" class="navbar-toggle" data-toggle="collapse" data-target=".navbar-collapse">
+                    <span class="sr-only">Toggle navigation</span>
+                    <span class="icon-bar"></span>
+                    <span class="icon-bar"></span>
+                    <span class="icon-bar"></span>
+                </button>
+                <a asp-area="" asp-controller="Home" asp-action="Index" class="navbar-brand">SimpleMvc11</a>
+            </div>
+            <div class="navbar-collapse collapse">
+                <ul class="nav navbar-nav">
+                    <li><a asp-area="" asp-controller="Home" asp-action="Index">Home</a></li>
+                    <li><a asp-area="" asp-controller="Home" asp-action="About">About</a></li>
+                    <li><a asp-area="" asp-controller="Home" asp-action="Contact">Contact</a></li>
+                </ul>
+            </div>
+        </div>
+    </nav>
+    <div class="container body-content">
+        @RenderBody()
+        <hr />
+        <footer>
+            <p>&copy; 2018 - SimpleMvc11</p>
+        </footer>
+    </div>
+
+    <environment names="Development">
+        <script src="~/lib/jquery/dist/jquery.js"></script>
+        <script src="~/lib/bootstrap/dist/js/bootstrap.js"></script>
+        <script src="~/js/site.js" asp-append-version="true"></script>
+    </environment>
+    <environment names="Staging,Production">
+        <script src="https://ajax.aspnetcdn.com/ajax/jquery/jquery-2.2.0.min.js"
+                asp-fallback-src="~/lib/jquery/dist/jquery.min.js"
+                asp-fallback-test="window.jQuery"
+                crossorigin="anonymous"
+                integrity="sha384-K+ctZQ+LL8q6tP7I94W+qzQsfRV2a+AfHIi9k8z8l9ggpc8X+Ytst4yBo/hH+8Fk">
+        </script>
+        <script src="https://ajax.aspnetcdn.com/ajax/bootstrap/3.3.7/bootstrap.min.js"
+                asp-fallback-src="~/lib/bootstrap/dist/js/bootstrap.min.js"
+                asp-fallback-test="window.jQuery && window.jQuery.fn && window.jQuery.fn.modal"
+                crossorigin="anonymous"
+                integrity="sha384-Tc5IQib027qvyjSMfHjOMaLkfuWVxZxUPnCJA7l2mCWNIpG9mGCD8wGNIcPD7Txa">
+        </script>
+        <script src="~/js/site.min.js" asp-append-version="true"></script>
+    </environment>
+
+    @RenderSection("Scripts", required: false)
+</body>
+</html>

src/Razor/test/testassets/SimpleMvc11/Views/_ViewImports.cshtml

@@ -0,0 +1,2 @@
+@using SimpleMvc11
+@addTagHelper *, Microsoft.AspNetCore.Mvc.TagHelpers

src/Razor/test/testassets/SimpleMvc11/Views/_ViewStart.cshtml

@@ -0,0 +1,3 @@
+@{
+    Layout = "_Layout";
+}