Merge "Cleanup: use shared apex_key" into main am: 254c650c58 am: 3f8f60ad53 am: 5497e6ccfa

Original change: https://android-review.googlesource.com/c/platform/hardware/interfaces/+/2780409

Change-Id: I83b675f1be22d84f11394fd7fa5e16d0c72a0899
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>