Description
The API spec definition that enumerates the VM sizes for AKS agent pools https://github.com/Azure/azure-rest-api-specs/blob/master/specification/containerservice/resource-manager/Microsoft.ContainerService/stable/2019-08-01/managedClusters.json#L1098
contain VM Size that is not valid for AKS agent pool.
According to https://docs.microsoft.com/en-us/azure/aks/quotas-skus-regions#restricted-vm-sizes the Standard_A1_v2 VM Size is not allowed for AKS agent pools however https://github.com/Azure/azure-rest-api-specs/blob/master/specification/containerservice/resource-manager/Microsoft.ContainerService/stable/2019-08-01/managedClusters.json#L1098 contains it.
This causes AKS cluster creations through API to fail with containerservice.ManagedClustersClient#CreateOrUpdate: Failure sending request: StatusCode=400 -- Original Error: Code="BadRequest" Message="The VM SKU chosen for this cluster Standard_A1_v2 does not have enough CPU/memory to run as an AKS node. Please see https://aka.ms/aks/restricted-skus for more details.