CLOUDSTACK-7480: UI > instance page > change "XenServer Tools Version 6.1+ field" to "Original XS Version is 6.1+" because what the field really presents is the original XenServer version when a VM is initially created.
if VM scale is disable, don't set any scale option for VM
CLOUDSTACK-7483: UI > instance page, template page > hide "Original XS Version is 6.1+" field when OS Type is not Windows since property jsonObj.details.hypervisortoolsversion only applies to Windows.