nas: add smartmontools-drivedb
This package is required otherwise many USB devices are not properly detected, and thus the smartmontools does not work as we want.
A good example is that w/o this is that smartmontools:
- /dev/sdb does not work
- /dev/sdb1 works
This is a temporarely workaround. I want to merge smartmontools-drivedb to smartmontools.