Zone import doesn't work

[garethhumphriesgkc]

Describe the bug
"Import zone" tool throws an error when loading, is looking for a "zone" argument that doesn't exist (it's called "domain")

To Reproduce
Steps to reproduce the behavior:

1. Go to Tools ->Import Zone
2. Enter a valid zone name (e.g. "test.domain.")
3. Attach a zone file
4. Click "Import", see:

Symfony \ Component \ Console \ Exception \ InvalidArgumentException
The "zone" argument does not exist.
 55
Symfony\Component\Console\Exception\InvalidArgumentException
…/vendor/symfony/console/Input/ArrayInput.php198
54
Symfony\Component\Console\Input\ArrayInput addArgument
…/vendor/symfony/console/Input/ArrayInput.php141
53
Symfony\Component\Console\Input\ArrayInput parse
…/vendor/symfony/console/Input/Input.php55
52
Symfony\Component\Console\Input\Input bind
…/vendor/symfony/console/Command/Command.php214

domain | "test.domain."

Desktop (please complete the following information):

• OS: Win10
• Browser Firefox