[identity] Implemet attribute conversions for DeviceList row

Summary:
Same as D10214 but for DeviceListRow

Depends on D10214

Test Plan: Tested later in the stack. TODO: add unit tests

Reviewers: michal, varun

Reviewed By: varun

Subscribers: ashoat, tomek

Differential Revision: https://phab.comm.dev/D10215