Version and Functional FRU fields for motherboard and membuf

[Lei YU]

> It's actually "Verify FRU Properties" and it's a part of openbmc-test-automation test suite, see here:
>
> https://github.com/openbmc/openbmc-test-automation/blob/ac687c43ddc7f639a4607ad89dd5ae462dcf65c9/tests/test_inventory.robot#L184
>
> As I see, Palmetto's yaml config does not have Version or Functional property for motherboard and membuf, so I do not think they will have such properties.
>
> So, does the test case pass for Palmetto?

@Sivas Srr Could you check this?