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

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

Change-Id: Ieda1d17d60d5220aa79789d575f0f94fc1ec764b
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>