Replace Ubuntu 18 images with Ubuntu 20 in ARM 64 runs (#104689)

* Disable (No)ClientCert_DefaultValue_ResumeSucceeds only on Ubuntu 18 ARM

* Update ubuntu images to 20.04 instead

* Use Ubuntu 22.04

* Revert "Use Ubuntu 22.04"

This reverts commit 0d42116.

Author: rzikm

eng/pipelines/coreclr/templates/helix-queues-setup.yml

@@ -70,9 +70,9 @@ jobs:
     # Linux arm64
     - ${{ if eq(parameters.platform, 'linux_arm64') }}:
       - ${{ if eq(variables['System.TeamProject'], 'public') }}:
-        - (Ubuntu.1804.Arm64.Open)Ubuntu.2004.Armarch.Open@mcr.microsoft.com/dotnet-buildtools/prereqs:ubuntu-18.04-helix-arm64v8
+        - (Ubuntu.2004.Arm64.Open)Ubuntu.2004.Armarch.Open@mcr.microsoft.com/dotnet-buildtools/prereqs:ubuntu-20.04-helix-arm64v8
       - ${{ if eq(variables['System.TeamProject'], 'internal') }}:
-        - (Ubuntu.1804.Arm64)Ubuntu.2004.ArmArch@mcr.microsoft.com/dotnet-buildtools/prereqs:ubuntu-18.04-helix-arm64v8
+        - (Ubuntu.2004.Arm64)Ubuntu.2004.ArmArch@mcr.microsoft.com/dotnet-buildtools/prereqs:ubuntu-20.04-helix-arm64v8
 
     # Linux musl x64
     - ${{ if eq(parameters.platform, 'linux_musl_x64') }}:

src/libraries/System.Net.Security/tests/FunctionalTests/SslStreamAllowTlsResumeTests.cs

@@ -134,9 +134,8 @@ await TestConfiguration.WhenAllOrAnyFailedWithTimeout(
             server.Dispose();
         }
 
-        [ConditionalTheory]
+        [Theory]
         [MemberData(nameof(SslProtocolsData))]
-        [ActiveIssue("https://github.com/dotnet/runtime/issues/103354", typeof(PlatformDetection), nameof(PlatformDetection.IsArmOrArm64Process))]
         public Task NoClientCert_DefaultValue_ResumeSucceeds(SslProtocols sslProtocol)
         {
             SslServerAuthenticationOptions serverOptions = new SslServerAuthenticationOptions
@@ -189,9 +188,8 @@ public static TheoryData<SslProtocols, bool, ClientCertSource> ClientCertTestDat
             return data;
         }
 
-        [ConditionalTheory]
+        [Theory]
         [MemberData(nameof(ClientCertTestData))]
-        [ActiveIssue("https://github.com/dotnet/runtime/issues/103354", typeof(PlatformDetection), nameof(PlatformDetection.IsArmOrArm64Process))]
         public Task ClientCert_DefaultValue_ResumeSucceeds(SslProtocols sslProtocol, bool certificateRequired, ClientCertSource certSource)
         {
             SslServerAuthenticationOptions serverOptions = new SslServerAuthenticationOptions