Database user credentials are not passed to _terminatur_data_*() calls.

```
vagrant@kala:/var/www/foo$ drush pulldata sitename.dev
Downloading data...                                                                                                                                                                                                                [warning]
Missing argument 3 for _terminatur_data_mysql(), called in /home/vagrant/.drush/terminatur/terminatur.drush.inc on line 261 and defined terminatur.database.inc:13                                                                 [warning]
Missing argument 4 for _terminatur_data_mysql(), called in /home/vagrant/.drush/terminatur/terminatur.drush.inc on line 261 and defined terminatur.database.inc:13                                                                 [warning]
Missing argument 5 for _terminatur_data_mysql(), called in /home/vagrant/.drush/terminatur/terminatur.drush.inc on line 261 and defined terminatur.database.inc:13                                                                 [warning]
Missing argument 6 for _terminatur_data_mysql(), called in /home/vagrant/.drush/terminatur/terminatur.drush.inc on line 261 and defined terminatur.database.inc:13                                                                 [warning]
Could not create new database. Verify you have permission and try again                                                                                                                                                            [error]
You have entered incorrect MySQL credentials.
```