Excluding code coverage flakes

scripts/Run-CodeCoverage.ps1

@@ -34,7 +34,7 @@ $testAssemblies = @(
     "test\TrackingCollectionTests\bin\$Configuration\TrackingCollectionTests.dll"
 )
 
-$opencoverTargetArgs = ($testAssemblies -join " ") + " --where cat!=Timings --inprocess --noresult"
+$opencoverTargetArgs = ($testAssemblies -join " ") + " --where cat!=Timings --where cat!=CodeCoverageFlake --inprocess --noresult"
 
 $opencoverDirectory = Join-Path $rootDirectory packages\OpenCover.4.6.519\tools
 $opencover = Join-Path $opencoverDirectory OpenCover.Console.exe
@@ -57,7 +57,7 @@ $codecovArgs = "-f `"coverage.xml`""
 
     Run-Process 600 $opencover $opencoverArgs
 
-    if($AppVeyor) {
+    if ($AppVeyor) {
         Run-Process 60 $codecov $codecovArgs
     }
 

test/GitHub.InlineReviews.UnitTests/Services/PullRequestSessionManagerTests.cs

@@ -447,7 +447,7 @@ Line 4";
                 }
             }
 
-            [Test]
+            [Test, NUnit.Framework.Category("CodeCoverageFlake")]
             public async Task UpdatesInlineCommentThreadsFromEditorContent()
             {
                 var baseContents = @"Line 1