How does one specify the type of a data disk?

[jbeker]

I do not want my data disks to be created as Premium SSDs. I have looked through the code and it seems like the parameters from the data_disks array are passed straight through so I have tried doing this using the SKUs parameter like described here: https://docs.microsoft.com/en-us/cli/azure/vm/disk?view=azure-cli-latest

azure.data_disks = [
      {
        name: 'sync-data',
        size_gb: 1024,
        sku: 'Standard_LRS'
      }
    ]

But I am still getting Premium SSDs. How can I get a Standard HDD?