[azure-arm] Allow specifying azure availability zone in the packer template

[miketimofeev]

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Description

Recently we've started experiencing issues during VM creation in Azure without specifying availability zone:
azure-arm: resources.DeploymentsClient#CreateOrUpdate: Failure sending request: StatusCode=400 -- Original Error: Code="InvalidTemplateDeployment" Message="The template deployment failed with error: 'The resource with id: '/subscriptions/***/resourceGroups/99275_ubuntu1604/providers/Microsoft.Compute/virtualMachines/pkrvmkeubkm2jhf' failed validation with message: 'The requested size for resource '/subscriptions/***/resourceGroups/99275_ubuntu1604/providers/Microsoft.Compute/virtualMachines/pkrvmkeubkm2jhf' is currently not available in location '***' zones '' for subscription '***'. Please try another size or deploy to a different location or zones. See https://aka.ms/azureskunotavailable for details.'.'."

The same happens when trying to create VM through the Azure portal with the following settings:

However, VM creates just fine using any available zone:

In the azure deploying template it looks like this:

            "zones": [
                "[parameters('zone')]"
            ]

Unfortunately, we can't find such parameter in packer templates so our VM generation is blocked and we're trying to solve the issue through Azure support.

Use Case(s)

See above

Potential configuration

"type": "azure-arm",
"location": "westus2",
"az": "1",

Potential References

[ghost]

This issue has been automatically migrated to hashicorp/packer-plugin-azure#54 because it looks like an issue with that plugin. If you believe this is not an issue with the plugin, please reply to hashicorp/packer-plugin-azure#54.

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