Merge "Add basic testing for KeyMint certs." am: 1ddde5e97e am: 03893419b5 am: 630126d531

Original change: https://android-review.googlesource.com/c/platform/hardware/interfaces/+/1533200

MUST ONLY BE SUBMITTED BY AUTOMERGER

Change-Id: I61363c56422fe13ff309dc78573a3452cca3fe59