func validateDiskSizeGB(v interface{}, _ string) (warnings []string, errors []error) {
	value := v.(int)
	if value < 0 || value > 32767 {
		errors = append(errors, fmt.Errorf(
			"The `disk_size_gb` can only be between 0 and 32767"))
	}
	return warnings, errors
}

error: Plan apply failed: compute.VirtualMachinesClient#CreateOrUpdate: Failure sending request: StatusCode=400 -- Original Error: Code="InvalidParameter" Message="The value '0' of parameter 'dataDisk.diskSizeGB' is out of range. Value '0' must be between '1' and '32767' inclusive." Target="dataDisk.diskSizeGB"