GPU inventory property fields

Changes:
   - Add GPU yaml fields to generate inventory.py.
   - Generate inventory.py for prodution test usage.

Resolves  openbmc/openbmc-test-automation#1136

Change-Id: I0a7d7223862a901a4d56e8d074a4440d20a930df
Signed-off-by: George Keishing <gkeishin@in.ibm.com>
2 files changed