FruDevice - next device name matching

[Patrick Venture]

I wanted to verify this was the expected behavior:

      |-/xyz/openbmc_project/FruDevice/Card
      |-/xyz/openbmc_project/FruDevice/Card_0
      |-/xyz/openbmc_project/FruDevice/Card_01
      |-/xyz/openbmc_project/FruDevice/Card_012
      |-/xyz/openbmc_project/FruDevice/Card_0123

It's fine if that is, albeit in the case where we have 11 cards,
that's going to be problematic.  My theory is, it's meant to increment
the last number part of the name.  This can be done by a regex parsing
of the name string and then pulling out the number, incrementing and
tracking the highest number hit.

https://github.com/openbmc/entity-manager/blob/master/src/FruDevice.cpp#L869

If that's what it should be doing, then I can submit a patch after
some testing, I just wanted to verify.

Patrick