Merge "Cleanup: use shared apex_key" into main am: 3876680a8b am: daed451633 am: fd39ceaa6e am: 8fe08677c7

Original change: https://android-review.googlesource.com/c/platform/hardware/interfaces/+/2780310

Change-Id: I66918cadf68467e62d1d33d228eefa13e36d8029
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>