Fix perf issue in provider by using Refresh() to update the status rather than instantiating ServiceController which has a significant perf degradation from .NET Framework (#7680)

src/Microsoft.WSMan.Management/ConfigProvider.cs

@@ -30,6 +30,8 @@ namespace Microsoft.WSMan.Management
         //Plugin Name Storage
         private PSObject objPluginNames = null;
 
+        private ServiceController winrmServiceController;
+
         /// <summary>
         /// Determines if Set-Item user input type validation is required or not.
         /// It is True by default, Clear-Item will set it to false so that it can
@@ -4436,15 +4438,16 @@ namespace Microsoft.WSMan.Management
         /// <returns></returns>
         private bool IsWSManServiceRunning()
         {
-            ServiceController svc = new ServiceController("WinRM");
-            if (svc != null)
+            if (winrmServiceController == null)
             {
-                if (svc.Status.Equals(ServiceControllerStatus.Running))
-                {
-                    return true;
-                }
+                winrmServiceController = new ServiceController("WinRM");
             }
-            return false;
+            else
+            {
+                winrmServiceController.Refresh();
+            }
+
+            return (winrmServiceController.Status.Equals(ServiceControllerStatus.Running));
         }
 
         /// <summary>