Quarantine IIS test, fix Kestrel test (#29429)

Author: BrennanConroy

src/Servers/IIS/IIS/test/Common.FunctionalTests/FrebTests.cs

@@ -86,6 +86,7 @@ public async Task CheckFailedRequestEvents()
         [MaximumOSVersion(OperatingSystems.Windows, WindowsVersions.Win10_20H1, SkipReason = "Shutdown hangs https://github.com/dotnet/aspnetcore/issues/25107")]
         [Repeat(10)]
         [RequiresIIS(IISCapability.FailedRequestTracingModule)]
+        [QuarantinedTest("https://github.com/dotnet/aspnetcore/issues/29428")]
         public async Task CheckFrebDisconnect()
         {
             var result = await SetupFrebApp();

src/Servers/Kestrel/test/InMemory.FunctionalTests/UpgradeTests.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;
@@ -234,7 +234,7 @@ public async Task AcceptsRequestWithChunkedEncodingAndUpgrade()
                 {
                     Assert.False(feature.IsUpgradableRequest);
                     Assert.Equal("chunked", context.Request.Headers[HeaderNames.TransferEncoding]);
-                    Assert.Equal(11, await context.Request.Body.ReadAsync(new byte[12], 0, 12));
+                    Assert.Equal(11, await context.Request.Body.ReadUntilEndAsync(new byte[100]));
                 }
                 else
                 {
@@ -400,7 +400,7 @@ public async Task DoesNotThrowGivenCanceledReadResult()
                     connectionTransportFeature.Transport.Input.CancelPendingRead();
 
                     // Use ReadAsync() instead of CopyToAsync() for this test since IsCanceled is only checked in
-                    // HttpRequestStream.ReadAsync() and not HttpRequestStream.CopyToAsync() 
+                    // HttpRequestStream.ReadAsync() and not HttpRequestStream.CopyToAsync()
                     Assert.Equal(0, await duplexStream.ReadAsync(new byte[1]));
                     appCompletedTcs.SetResult(null);
                 }