Skip some tests on Ubuntu 16

src/Identity/test/Identity.Test/IdentityUIScriptsTest.cs

@@ -79,6 +79,9 @@ namespace Microsoft.AspNetCore.Identity.Test
 
         [Theory]
         [MemberData(nameof(ScriptWithFallbackSrcData))]
+        // Ubuntu 16 uses an old version of OpenSSL that doesn't work well when an intermediate CA is expired.
+        // We've decided to not run these tests against that OS anymore and will run on newer versions of Ubuntu.
+        [SkipOnHelix("Skip on Ubuntu 16", Queues = "Ubuntu.1604.Amd64.Open;Ubuntu.1604.Amd64")]
         public async Task IdentityUI_ScriptTags_FallbackSourceContent_Matches_CDNContent(ScriptTag scriptTag)
         {
             var wwwrootDir = Path.Combine(GetProjectBasePath(), "wwwroot", scriptTag.Version);