Do not redirect stderr for exec auth provider

Author: bianyifan

src/KubernetesClient/KubernetesClientConfiguration.ConfigFile.cs

@@ -33,11 +33,6 @@ public partial class KubernetesClientConfiguration
         /// </summary>
         public static TimeSpan ExecTimeout { get; set; } = TimeSpan.FromMinutes(2);
 
-        /// <summary>
-        ///     Exec process Standard Errors
-        /// </summary>
-        public static event EventHandler<DataReceivedEventArgs> ExecStdError;
-
         /// <summary>
         ///     Initializes a new instance of the <see cref="KubernetesClientConfiguration" /> from default locations
         ///     If the KUBECONFIG environment variable is set, then that will be used.
@@ -535,7 +530,7 @@ public static Process CreateRunnableExternalProcess(ExternalExecution config)
             }
 
             process.StartInfo.RedirectStandardOutput = true;
-            process.StartInfo.RedirectStandardError = true;
+            process.StartInfo.RedirectStandardError = false;
             process.StartInfo.UseShellExecute = false;
             process.StartInfo.CreateNoWindow = true;
 
@@ -565,11 +560,6 @@ public static ExecCredentialResponse ExecuteExternalCommand(ExternalExecution co
             try
             {
                 process.Start();
-                if (ExecStdError != null)
-                {
-                    process.ErrorDataReceived += (s, e) => ExecStdError.Invoke(s, e);
-                    process.BeginErrorReadLine();
-                }
             }
             catch (Exception ex)
             {