Improve IIS tests (#40166)

eng/targets/Helix.props

@@ -9,7 +9,7 @@
   </ItemDefinitionGroup>
 
   <PropertyGroup>
-    <HelixTimeout>00:30:00</HelixTimeout>
+    <HelixTimeout>00:45:00</HelixTimeout>
     <HelixTestName>$(MSBuildProjectName)--$(TargetFramework)</HelixTestName>
     <LoggingTestingDisableFileLogging Condition="'$(IsHelixJob)' == 'true'">false</LoggingTestingDisableFileLogging>
     <NodeVersion>16.11.0</NodeVersion>

src/Servers/IIS/IIS/test/IIS.FunctionalTests/Http2TrailersResetTests.cs

@@ -8,6 +8,7 @@ using System.Net;
 using System.Net.Http;
 using System.Threading.Tasks;
 using Microsoft.AspNetCore.Http2Cat;
+using Microsoft.AspNetCore.Server.IntegrationTesting;
 using Microsoft.AspNetCore.Server.IntegrationTesting.Common;
 using Microsoft.AspNetCore.Server.IntegrationTesting.IIS;
 using Microsoft.AspNetCore.Server.Kestrel.Core.Internal.Http2;
@@ -24,7 +25,7 @@ namespace Microsoft.AspNetCore.Server.IIS.FunctionalTests;
 /// on IIS Express even on the new Windows versions because IIS Express has its own outdated copy of IIS.
 /// </summary>
 [Collection(IISHttpsTestSiteCollection.Name)]
-public class Http2TrailerResetTests
+public class Http2TrailerResetTests : FunctionalTestsBase
 {
     private const string WindowsVersionForTrailers = "10.0.20238";
 

src/Servers/IIS/IIS/test/IIS.FunctionalTests/Http3Tests.cs

@@ -11,6 +11,7 @@ using System.Net.Quic;
 using System.Text;
 using System.Threading.Tasks;
 using Microsoft.AspNetCore.Http;
+using Microsoft.AspNetCore.Server.IntegrationTesting;
 using Microsoft.AspNetCore.Server.IIS.FunctionalTests;
 using Microsoft.AspNetCore.Server.IntegrationTesting.Common;
 using Microsoft.AspNetCore.Server.IntegrationTesting.IIS;
@@ -26,7 +27,7 @@ namespace Microsoft.AspNetCore.Server.IIS.FunctionalTests;
 [MsQuicSupported]
 [HttpSysHttp3Supported]
 [Collection(IISHttpsTestSiteCollection.Name)]
-public class Http3Tests
+public class Http3Tests : FunctionalTestsBase
 {
     public Http3Tests(IISTestSiteFixture fixture)
     {