Disable NegotiateStreamTest fixture for distros without working Kerberos

src/CoreFx.Private.TestUtilities/ref/CoreFx.Private.TestUtilities.cs

@@ -77,6 +77,9 @@ public static partial class PlatformDetection
         public static Version ICUVersion { get { return null; } }
         public static bool IsUbuntu { get { throw null; } }
         public static bool IsUbuntu1404 { get { throw null; } }
+        public static bool IsUbuntu1604 { get { throw null; } }
+        public static bool IsUbuntu1704 { get { throw null; } }
+        public static bool IsUbuntu1710 { get { throw null; } }
         public static bool IsWindows { get { throw null; } }
         public static bool IsWindows10InsiderPreviewBuild16215OrGreater { get { throw null; } }
         public static bool IsWindows10Version1607OrGreater { get { throw null; } }

src/CoreFx.Private.TestUtilities/src/System/PlatformDetection.Unix.cs

@@ -33,6 +33,9 @@ public static partial class PlatformDetection
         public static bool IsDebian => IsDistroAndVersion("debian");
         public static bool IsDebian8 => IsDistroAndVersion("debian", "8");
         public static bool IsUbuntu1404 => IsDistroAndVersion("ubuntu", "14.04");
+        public static bool IsUbuntu1604 => IsDistroAndVersion("ubuntu", "16.04");
+        public static bool IsUbuntu1704 => IsDistroAndVersion("ubuntu", "17.04");
+        public static bool IsUbuntu1710 => IsDistroAndVersion("ubuntu", "17.10");
         public static bool IsCentos7 => IsDistroAndVersion("centos", "7");
         public static bool IsTizen => IsDistroAndVersion("tizen");
         public static bool IsNotFedoraOrRedHatOrCentos => !IsDistroAndVersion("fedora") && !IsDistroAndVersion("rhel") && !IsDistroAndVersion("centos");

src/CoreFx.Private.TestUtilities/src/System/PlatformDetection.Windows.cs

@@ -21,6 +21,9 @@ public static partial class PlatformDetection
         public static bool IsDebian => false;
         public static bool IsDebian8 => false;
         public static bool IsUbuntu1404 => false;
+        public static bool IsUbuntu1604 => false;
+        public static bool IsUbuntu1704 => false;
+        public static bool IsUbuntu1710 => false;
         public static bool IsCentos7 => false;
         public static bool IsTizen => false;
         public static bool IsNotFedoraOrRedHatOrCentos => true;

src/System.Net.Security/tests/FunctionalTests/NegotiateStreamTestForUnix.cs

@@ -3,6 +3,7 @@
 // See the LICENSE file in the project root for more information.
 
 using System.Collections.Generic;
+using System.ComponentModel;
 using System.Diagnostics;
 using System.IO;
 using System.Linq;
@@ -72,15 +73,31 @@ public bool CheckAndClearCredentials(ITestOutputHelper output)
             }
 
             // Clear the credentials
-            var startInfo = new ProcessStartInfo(KDestroyCmd);
-            startInfo.UseShellExecute = true;
-            startInfo.CreateNoWindow = true;
-            startInfo.Arguments = "-A";
-            using (Process clearCreds = Process.Start(startInfo))
-            {
-                clearCreds.WaitForExit();
-                output.WriteLine("kdestroy returned {0}", clearCreds.ExitCode);
-                return (clearCreds.ExitCode == 0);
+            try
+            {
+                var startInfo = new ProcessStartInfo(KDestroyCmd);
+                startInfo.UseShellExecute = true;
+                startInfo.CreateNoWindow = true;
+                startInfo.Arguments = "-A";
+                using (Process clearCreds = Process.Start(startInfo))
+                {
+                    clearCreds.WaitForExit();
+                    output.WriteLine("kdestroy returned {0}", clearCreds.ExitCode);
+                    return (clearCreds.ExitCode == 0);
+                }
+            }
+            catch (Win32Exception)
+            {
+                // https://github.com/dotnet/corefx/issues/24000
+                // on these distros right now
+                Assert.True(PlatformDetection.IsUbuntu1704 ||
+                            PlatformDetection.IsUbuntu1710 ||
+                            PlatformDetection.IsOpenSUSE   ||
+                            PlatformDetection.IsFedora     ||
+                            PlatformDetection.IsDebian     ||
+                            PlatformDetection.IsCentos7);
+
+                return false;
             }
         }