Hyper-V WMI V2

For vmutilsv2 adapted to WMI virtualization v2:
attach_ide_drive
create_vm
create_scsi_controller
destroy_vm
_add_virt_resource
_modify_virt_resource
_remove_virt_resource
Created virtutils, factory for creating utils with WMI virtualization v1 or v2.
Created files for NetworkUtilsV2 and VhdUtilsV2 classes.