[tests] Quarantine additional tests for issues open against them

These tests have issues open for them, but tests aren't marked with
QuarantinedTest attribute.

Author: radical

tests/Aspire.Hosting.Azure.Tests/AzureCosmosDBEmulatorFunctionalTests.cs

@@ -22,6 +22,7 @@ public class AzureCosmosDBEmulatorFunctionalTests(ITestOutputHelper testOutputHe
     // [InlineData(true)] // "Using CosmosDB emulator in integration tests leads to flaky tests - https://github.com/dotnet/aspire/issues/5820"
     [InlineData(false)]
     [RequiresDocker]
+    [QuarantinedTest("//github.com/dotnet/aspire/issues/7345")]
     public async Task VerifyWaitForOnCosmosDBEmulatorBlocksDependentResources(bool usePreview)
     {
         // Cosmos can be pretty slow to spin up, lets give it plenty of time.

tests/Aspire.Hosting.MySql.Tests/MySqlFunctionalTests.cs

@@ -377,6 +377,7 @@ await pipeline.ExecuteAsync(async token =>
 
     [Fact]
     [RequiresDocker]
+    [QuarantinedTest("https://github.com/dotnet/aspire/issues/7340")]
     public async Task VerifyEfMySql()
     {
         var cts = new CancellationTokenSource(TimeSpan.FromMinutes(5));

tests/Aspire.Hosting.Tests/MSBuildTests.cs

@@ -3,6 +3,7 @@
 
 using System.Diagnostics;
 using System.Text;
+using Aspire.TestUtilities;
 using Xunit;
 
 namespace Aspire.Hosting.Tests;
@@ -13,7 +14,7 @@ public class MSBuildTests
     /// Tests that when an AppHost has a ProjectReference to a library project, a warning is emitted.
     /// </summary>
     [Fact]
-    [ActiveIssue("https://github.com/dotnet/aspire/issues/8467")]
+    [QuarantinedTest("https://github.com/dotnet/aspire/issues/8467")]
     public void EnsureWarningsAreEmittedWhenProjectReferencingLibraries()
     {
         var repoRoot = MSBuildUtils.GetRepoRoot();

tests/Aspire.Hosting.Tests/OperationModesTests.cs

@@ -14,6 +14,7 @@ namespace Aspire.Hosting.Tests;
 public class OperationModesTests(ITestOutputHelper outputHelper)
 {
     [Fact]
+    [QuarantinedTest("https://github.com/dotnet/aspire/issues/8400")]
     public async Task VerifyBackwardsCompatableRunModeInvocation()
     {
         // The purpose of this test is to verify that the apphost executable will continue