An OMV box is a NAS built on Debian, but this driver inherited LinuxDriver alone
and implemented the storage getters by name, because inheriting StorageDriver as
well would have let its NotImplementedError stubs shadow LinuxDriver's working
package and service methods. DEVICE_CLASS = "storage" then existed to tell
netOrk what the class hierarchy no longer said.
napalm-device-types v1.0 makes role bases declaration-only, so both roles can be
declared honestly and in the order that matters:
class OpenMediaVaultDriver(StorageDriver, LinuxDriver):
device_class comes from that first base now, so DEVICE_CLASS is gone.
Christian Manivong
0f57745725