Support for non-factory attestation in Strongbox. am: 0e0f60cf

Original change: https://googleplex-android-review.googlesource.com/c/platform/hardware/interfaces/+/22993200



Change-Id: I3c0f0bcb544a742a8787598585b4e272a2c30be7
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>