provider/ignition_filesystem: Fix panic when passing in empty option list #15495
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This PR fixes a panic that will occur when passing in an empty array to options when defining an ignition_filesystem. I updated the tests to verify this issue is resolved as well. You can trigger the panic with the following terraform script:
https://gist.github.com/chosenken/56ca0e36675f10abb472f6faad423e4b
Please let me know if you need anything else, or have questions. Thanks!
Note: I'm opening a PR on terraform-provisioners/terraform-provider-ignition with this fix as well.