Commands from variants are not fetched in definition mapping

[buddly27]

commands are authorized in variant mappings, but it won't be taken into account from the wiz run command.

>>> wiz view foo --json
{
    "identifier": "foo",
    "variants": [
        {
            "identifier": "V1",
            "command": {
                "app": "FooExe"
            }
        }
    ]
}

# This command will fail
>>> wiz run app