Nested Virtualization Support

Nested Virtualization is one of the features introduced in the newly released Windows / Hyper-V Server 2016. [1]

Regarding Hyper-V nested virtualization, there are a few things to be kept in mind:

* An instance with nested virtualization enabled cannot have dynamic memory, and its memory cannot be live-resized.
* The guest OS has to be Windows / Hyper-V Server 2016.
* Hosts with Device Guard cannot expose virtualization extensions to guests.
* Hosts with Virtualization Based Security cannot expose virtualization extensions to guests.
* Mac spoofing will have to be enabled for the VM's vNICs.

This blueprint will add the following:

* A method which enables MAC spoofing for a given vswitch port.
* A method which checks whether the host supports nested virtualization.
* A method which will enable nested virtualization for a given VM.

[1] https://msdn.microsoft.com/en-us/virtualization/hyperv_on_windows/user_guide/nesting