Azure Builder: certificate in .pem format is required for authentication using client_cert_path

[ghost]

This issue was originally opened by @VladimirKhvostov as hashicorp/packer#8340. It was migrated here as a result of the Packer plugin split. The original body of the issue is below.

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Feature Description

First of all, documentation for client_cert_path should be updated. Unfortunately, client_cert_path needs to point to .pem, which is not clear from the documentation. .pfx files are not supported.

For Windows users, it would be great to have client_cert_thumbprint property, which would allow us to reference cert stored in certificate store.

Use Case(s)

Using packer on Windows