Get rid of random "external_dump" connection on dumps without metadata

[lupinitylabs]

Currently, dumps with missing metadata will fall back to an array of defaults at

laravel-protector/src/Commands/ImportDump.php

Line 233 in 145d201

'connection' => 'external_dump',

and defining an external_dump connection.

On import, this connection will then be presented to the user, which I find highly confusing:

In reality, dumps that do not have any metadata are just broken in 100% of cases I have seen, and should just be reported as such directly after importing. Likewise, they should be ignored and probably warned about on import.

Opinions?