VMSwitch: Add NAT virtual switch support

[iainbrighton]

With the introduction of Server 2016 TP3/TP4 there is a new NAT virtual switch type. This should be added to the xVMSwitch resource. How the NAT specific properties are handled will need to ironed out before implementing.

[rchaganti]

Do you think this should be a separate resource? If you are creating a NAT switch there are certain other steps that we need to perform such as setting the IP Range and Subnet. I have a resource that is already written for this and I can push it here.
https://github.com/rchaganti/DSCResources/tree/master/cHyper-V/DSCResources/cNatSwitch

Thoughts?

[iainbrighton]

@rchaganti I would love to see that functionality merged in! The only reason I mention a separate resource is if the NetNat cmdlets be used with some other functionality than the virtual NAT switch, like RRAS? If so, I think they probably should be in a separate resource.

[iainbrighton]

@rchaganti @PlagueHO @kwirkykat Now that Server 2016 is officially out, can we think about implementing this? The *-NetNat cmdlets aren't really Hyper-V specific, so should they be in the xHyper-V module or another/different module?

[PlagueHO]

@iainbrighton @rchaganti @kwirkykat - Good point. Perhaps xNetworking is a more appropriate location?

[rchaganti]

xNetworking is suitable for this given that this has nothing to with VM switches. I am in the process of refactoring cHyper-V and push this to xNetworking.

[PlagueHO]

@rchaganti - Nice! 😁