Merge "Cleanup: use a shared apex_key" into main am: b0675a2ecb am: c99e7f4efc

Original change: https://android-review.googlesource.com/c/platform/hardware/interfaces/+/2780307

Change-Id: I08ebe68ff9f02d6312bcca4b384cf6d4ef4a303d
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>