[macOS] Switch image generation to faster datastores (#1801)

* select datastore script

* add debug message

* add move-vm and helpers

* add error action

* formatting the script

* nits

* add missing quotes

* add synopsis

images.CI/macos/move-vm.ps1

@@ -0,0 +1,59 @@
+<#
+.SYNOPSIS
+
+This script migrates given VM to another datastore
+
+.PARAMETER VMName
+VM name to migrate (Example "macOS-10.15_20201012.4")
+
+.PARAMETER TargetDataStore
+Target datastore (Example "ds-image")
+
+.PARAMETER VIServer
+vCenter address (Example "10.0.1.16")
+
+.PARAMETER VIUserName
+vCenter username (Example "Administrator")
+
+.PARAMETER VIPassword
+vCenter password (Example "12345678")
+#>
+
+[CmdletBinding()]
+param(
+    [Parameter(Mandatory)]
+    [ValidateNotNullOrEmpty()]
+    [string]$VMName,
+
+    [Parameter(Mandatory)]
+    [ValidateNotNullOrEmpty()]
+    [string]$TargetDataStore,
+
+    [Parameter(Mandatory)]
+    [ValidateNotNullOrEmpty()]
+    [string]$VIServer,
+
+    [Parameter(Mandatory)]
+    [ValidateNotNullOrEmpty()]
+    [string]$VIUserName,
+
+    [Parameter(Mandatory)]
+    [ValidateNotNullOrEmpty()]
+    [string]$VIPassword
+)
+
+# Import helpers module
+Import-Module $PSScriptRoot\helpers.psm1 -DisableNameChecking
+
+# Connection to a vCenter Server system
+Connect-VCServer
+
+try
+{
+    Get-VM $VMName | Move-VM -Datastore $TargetDataStore -ErrorAction Stop
+    Write-Host "VM has been moved successfully to target datastore '$TargetDataStore'"
+}
+catch
+{
+    Write-Host "##vso[task.LogIssue type=error;]Failed to move VM '$VMName' to target datastore '$TargetDataStore'"
+}