If you use setUsername/setPassword instead of passing them to the DriverProperties, BoneCP generates a warning : 

```
[WARN ] c.j.b.BoneCPConfig - JDBC username not set in driver properties, copying it from pool config
[WARN ] c.j.b.BoneCPConfig - JDBC password not set in driver properties, copying it from pool config
```

Since the logging level in our Logback configuration is set to WARN, I thought it was good to avoid meaningless log messages ;)