set CreateNoWindow to true (#1242)

Author: IvanJosipovic

src/KubernetesClient/KubernetesClientConfiguration.ConfigFile.cs

@@ -523,7 +523,8 @@ public static Process CreateRunnableExternalProcess(ExternalExecution config)
             process.StartInfo.RedirectStandardOutput = true;
             process.StartInfo.RedirectStandardError = true;
             process.StartInfo.UseShellExecute = false;
-
+            process.StartInfo.CreateNoWindow = true;
+            
             return process;
         }