Merge "Cleanup: use shared apex_key" into main am: 3876680a am: daed4516...

Merge "Cleanup: use shared apex_key" into main am: 3876680a am: daed4516 am: fd39ceaa am: 8fe08677 am: eac68713

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



Change-Id: I8a0f381d569e2eec0dc378ed7b35deae327844e3
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>