Merge "Cleanup: use a shared apex_key" into main am: b0675a2e am: 5c90b3b7 am: 5df65b56

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



Change-Id: Ic01f7e230bc520e76d270ec713e04056d68c078f
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>