Change:
- Fix regression: unhandled exception when given inventory directory
is empty or contains empty subdirectories.
- Fix unhandled exception when limit file is actually a directory
instead of a file.
- Fix inventory tests which previously could never fail due to missing
`set -e`. Fixed up tests that failed after `set -e` was added. Added
several tests.
Test Plan:
- New tests
- Fixed existing tests which previously could never fail
Tickets:
- Fixes#73658
Signed-off-by: Rick Elrod <rick@elrod.me>
