[automerger skipped] Fix attestation properties reading logic am: 38dc14e8e0 -s ours

am skip reason: Merged-In I9af7daa08cbd8bb52f3509fe93f787ba94b7bbc3 with SHA-1 316e3d16c9 is already in history

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/base/+/24707494

Change-Id: I3f3300a07df9ad3d227e6f168d948829d670ffe3
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>