Merge "aconfig: throw exception if reading from DeviceConfig fails" into main...

Merge "aconfig: throw exception if reading from DeviceConfig fails" into main am: c20d1155 am: 093793c8 am: 4df1129d am: 9189c168

Original change: https://android-review.googlesource.com/c/platform/build/+/2751666



Change-Id: If51eee5bdffb0296619f13ffd518f55a36f8eb64
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>