Fix hanging CORS test (#12006)

Author: jkotalik

src/Hosting/Server.IntegrationTesting/src/Deployers/SelfHostDeployer.cs

@@ -1,4 +1,4 @@
-// Copyright (c) .NET Foundation. All rights reserved.
+// Copyright (c) .NET Foundation. All rights reserved.
 // Licensed under the Apache License, Version 2.0. See License.txt in the project root for license information.
 
 using System;
@@ -131,6 +131,12 @@ public override async Task<DeploymentResult> DeployAsync()
                     WorkingDirectory = workingDirectory
                 };
 
+                Logger.LogInformation($"Working directory {workingDirectory}");
+                Logger.LogInformation($"{Directory.Exists(workingDirectory)}");
+                Logger.LogInformation($"Filename {executableName}");
+                Logger.LogInformation($"{File.Exists(executableName)}");
+                Logger.LogInformation($"Arguments {executableArgs}");
+
                 AddEnvironmentVariablesToProcess(startInfo, DeploymentParameters.EnvironmentVariables);
 
                 Uri actualUrl = null;

src/Middleware/CORS/test/FunctionalTests/CORS.FunctionalTests.csproj

@@ -1,4 +1,4 @@
-<Project Sdk="Microsoft.NET.Sdk">
+<Project Sdk="Microsoft.NET.Sdk">
 
   <PropertyGroup>
     <TargetFramework>netcoreapp3.0</TargetFramework>
@@ -16,6 +16,15 @@
   <ItemGroup>
     <!-- We don't need anything in this assembly, we just want to make sure it's built -->
     <ProjectReference Include="$(RepoRoot)src\Hosting\Server.IntegrationTesting\src\Microsoft.AspNetCore.Server.IntegrationTesting.csproj" />
+    <ProjectReference Include="..\testassets\TestOrigin\TestOrigin.csproj">
+      <ReferenceOutputAssembly>False</ReferenceOutputAssembly>
+    </ProjectReference>
+    <ProjectReference Include="..\testassets\TestDestination\TestDestination.csproj">
+      <ReferenceOutputAssembly>False</ReferenceOutputAssembly>
+    </ProjectReference>
+    <ProjectReference Include="..\testassets\CorsMiddlewareWebSite\CorsMiddlewareWebSite.csproj">
+      <ReferenceOutputAssembly>False</ReferenceOutputAssembly>
+    </ProjectReference>
   </ItemGroup>
 
   <ItemGroup>

src/Middleware/CORS/test/FunctionalTests/CorsMiddlewareFunctionalTest.cs

@@ -28,7 +28,7 @@ public CorsMiddlewareFunctionalTests(ITestOutputHelper output)
 
         public ITestOutputHelper Output { get; }
 
-        [ConditionalTheory(Skip = "https://github.com/aspnet/AspNetCore/issues/11354")]
+        [ConditionalTheory]
         [OSSkipCondition(OperatingSystems.MacOSX, SkipReason = "Disabling this test on OSX until we have a resolution for https://github.com/aspnet/AspNetCore-Internal/issues/1619")]
         [InlineData("Startup")]
         [InlineData("StartupWithoutEndpointRouting")]
@@ -98,7 +98,7 @@ private static async Task<CorsDeploymentResult> CreateDeployments(ILoggerFactory
             var originDeployment = await originFactory.DeployAsync();
 
             var secondOriginFactory = ApplicationDeployerFactory.Create(originParameters, loggerFactory);
-            var secondOriginDeployment = await originFactory.DeployAsync();
+            var secondOriginDeployment = await secondOriginFactory.DeployAsync();
 
             var port = originDeployment.HttpClient.BaseAddress.Port;
             var destinationParameters = new DeploymentParameters