Ensure that the script is run with elevated privileges (#20669)

* Ensure that the script is run with elevated privileges

This fixes #20654

* Implement our own check for elevated privileges

examples/scripts/ConfigureRemotingForAnsible.ps1

@@ -1,3 +1,5 @@
+#Requires -Version 3.0
+
 # Configure a Windows host for remote management with Ansible
 # -----------------------------------------------------------
 #
@@ -113,6 +115,22 @@ Trap
     Exit 1
 }
 $ErrorActionPreference = "Stop"
+
+# Get the ID and security principal of the current user account
+$myWindowsID=[System.Security.Principal.WindowsIdentity]::GetCurrent()
+$myWindowsPrincipal=new-object System.Security.Principal.WindowsPrincipal($myWindowsID)
+
+# Get the security principal for the Administrator role
+$adminRole=[System.Security.Principal.WindowsBuiltInRole]::Administrator
+
+# Check to see if we are currently running "as Administrator"
+if (-Not $myWindowsPrincipal.IsInRole($adminRole))
+{
+    Write-Host "ERROR: You need elevated Administrator privileges in order to run this script."
+    Write-Host "       Start Windows PowerShell by using the Run as Administrator option."
+    Exit 2
+}
+
 $EventSource = $MyInvocation.MyCommand.Name
 If (-Not $EventSource)
 {