* Check local store repository for changes
Instead of simply assume that the local store repository got changed,
use mtime to check if there have been any changes to the local store.
This mimics a similar behavior to the git repository store updates.
Before this change, we end up in the updated repo code path, which
caused a re-read of all add-ons on every store reload, even though
nothing changed at all. Store reloads are triggered by Home Assistant
Core every 5 minutes.
* Fix pytest failure
Now that we actually only reload metadata if the local store changed
we have to fake the change as well to fix the store manager tests.
* Fix path cache update test for local store repository
* Take root directory into account/add pytest
* Rename utils/__init__.py tests to test_utils_init.py
