Add integration test gherkin story for automatic device provisioning

[rtibbles]

#8198 added automatic device provisioning.

When a JSON file is present at the file location determined by the option Paths -> AUTOMATIC_PROVISION_FILE.

The JSON file should have the format:

    {
        "facility_name": "My Facility",
        "preset": "formal",
        "facility_settings": {
            "learner_can_edit_username": true,
            "learner_can_edit_name": true,
            "learner_can_edit_password": true,
            "learner_can_sign_up": true,
            "learner_can_delete_account": true,
            "learner_can_login_with_no_password": true,
            "show_download_button_in_learn": true
        },
        "device_settings": {
            "language_id": "en",
            "landing_page": "learn",
            "allow_guest_access": true,
            "allow_peer_unlisted_channel_import": true,
            "allow_learner_unassigned_resource_access": true,
            "name": "My Device",
            "allow_other_browsers_to_connect": true
        },
        "superuser": {
            "username": "superuser",
            "password": "password"
        }
    }

And this should then provision the device in the same way that the setup wizard would.

[radinamatic]

Closing as fixed in #9587