[AKS] [Preview] Support new Windows VHD image #12412
Description
Description of the new feature
AKS is going to provide preview feature for supporting new Windows VHD image aks-windows-2004 for Ignite, the swagger spec is not ready yet.
Proposed implementation details (optional)
The trivial implementation is to add new parameter WindowsOSType as below (NEED to redesign parameter for better user experience):
New-AzAksNodePool -ResourceGroupName myResourceGroup -ClusterName myAKSCluster -OsType Windows -Name npwin -KubernetesVersion 1.16.7 -WindowsOSType aks-windows-2004