I'm running late and I stumbled on some git merging so I can't quickly put up a PR but this will work:

```python
    def _setup_config_manager(self, config_file):
        _super = super(IntegrationTestServerStatus, self)._setup_config_manager

        self.rabbit_queue_mocked = Mock()

        m = Mock()
        e = Mock()
        e.queue_status_standard.method.message_count = 1
        m.connection.return_value = e

        self.rabbit_queue_mocked.return_value = m

        config_manager, json_file = _super(
            'socorro.cron.jobs.serverstatus.ServerStatusCronApp|5m',
            extra_value_source={'queue_class': self.rabbit_queue_mocked}
        )
        return config_manager, json_file
```