Inventory YAML script changes

Fixes:
   - Add new FRU field "Cached" from Cacheable.interface.yaml
   - Fix generated inventory.py file ending space

Resolves openbmc/openbmc-test-automation#415

Change-Id: Ic9d38b3b2854e0ea0a43703f791665881f5c8e01
Signed-off-by: George Keishing <gkeishin@in.ibm.com>
2 files changed