Reversing 9d9ebc504b (#492)

The change made in 9d9ebc504b breaks ImagePush operations for Instant Clone pools. See the API documentation for reference.

The schema for `DesktopPushImageSpec` is as follows:

* DesktopPushImageSpec
  * Settings
    * StartTime

Signed-off-by: Matt Frey <mfrey@vmware.com>

Modules/VMware.Hv.Helper/VMware.HV.Helper.psm1

@@ -7108,7 +7108,7 @@ function Start-HVPool {
             $spec.Settings = New-Object VMware.Hv.DesktopPushImageSettings
             $spec.Settings.LogoffSetting = $logoffSetting
             $spec.Settings.StopOnFirstError = $stopOnFirstError
-            if ($startTime) { $spec.startTime = $startTime }
+            if ($startTime) { $spec.Settings.startTime = $startTime }
             if (!$confirmFlag -OR  $pscmdlet.ShouldProcess($poolList.$item)) {
               $desktop_helper.Desktop_SchedulePushImage($services,$item,$spec)
             }