fix: add logs and retry logic for windows vhd building (#4680)

vhdbuilder/packer/configure-windows-vhd.ps1

@@ -269,9 +269,24 @@ function Register-ExpandVolumeTask {
 '@
 
     $taskScriptPath = Join-Path $global:aksToolsDir "expand-volume.ps1"
-    $taskScript| Set-Content -Path $taskScriptPath -Force
+    $taskScript | Set-Content -Path $taskScriptPath -Force
+
+    # It sometimes failed with below error
+    # New-ScheduledTask : Cannot validate argument on parameter 'Action'. The argument is null or empty. Provide an argument
+    # that is not null or empty, and then try the command again.
+    # Add below logs and retry logic to test it
+    $scriptContent = Get-Content -Path $taskScriptPath
+    Write-Log "Task script content: $scriptContent"
 
     $action = New-ScheduledTaskAction -Execute "powershell.exe" -Argument "-File `"$taskScriptPath`""
+    if (-not $action) {
+        Write-Log "action is null or empty. taskScriptPath: $taskScriptPath. Recreating it"
+        $action = New-ScheduledTaskAction -Execute "powershell.exe" -Argument "-File `"$taskScriptPath`""
+        if (-not $action) {
+            Write-Log "action is still null"
+            exit 1
+        }
+    }
     $principal = New-ScheduledTaskPrincipal -UserId SYSTEM -LogonType ServiceAccount -RunLevel Highest
     $trigger = New-JobTrigger -AtStartup
     $definition = New-ScheduledTask -Action $action -Principal $principal -Trigger $trigger -Description "aks-expand-volume"