Added ESU timestamp

Author: Alexander (Sasha) Nosov

samples/manage/azure-arc-enabled-sql-server/modify-license-type/README.md

@@ -66,7 +66,7 @@ The following command will scan resource group `<resource_group_name>` in the su
 ## Example 4
 
 The following command will set License Type to 'Paid" and enables ESU on all servers in the subscriptions `<sub_id>` and the resource group `<resource_group_name>`.
-    
+
 ```console
 .\modify-license-type.ps1 -SubId <sub_id> -ResourceGroup <resource_group_name> -LicenseType Paid -EnableESU Yes -Force
 ```

samples/manage/azure-arc-enabled-sql-server/modify-license-type/modify-license-type.ps1

@@ -210,6 +210,7 @@ foreach ($sub in $subscriptions){
         if ($EnableESU) {
             if (($settings["LicenseType"] | select-string "Paid","PAYG") -or  ($EnableESU -eq "No")) {
                 $settings["enableExtendedSecurityUpdates"] = ($EnableESU -eq "Yes")
+                $settings["esuLastUpdatedTimestamp"] = [DateTime]::UtcNow.ToString((Get-Culture).DateTimeFormat.UniversalSortableDateTimePattern)
                 $WriteSettings = $true
             } else {
                 write-host "The configured license type does not support ESUs"