NM no longer exposes information via HAL.  It uses udev instead.  The udev code we have in storage/udev.py is useful for extracting this information, but it's not entirely correct.  Also, it's storage-specific.

We need to break some of this code out of the storage module into a generic udev layer that we can then easily use for both storage and networking devices.  See the requireName= parameter to udev_get_block_device and the MODEL/VENDOR splitting in udev_parse_block_entry for examples of how this is less than ideal.