Merge "Adding tests to verify Device-Unique-Attestation." into main am: 0e0b09a901

Original change: https://android-review.googlesource.com/c/platform/system/security/+/2616219

Change-Id: If13aaeb9db3bd4da5c37f0da226220bca276b5db
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>