Add more data to SnapshotMergeReported. am: e35b4380d2

Original change: https://android-review.googlesource.com/c/platform/system/update_engine/+/2017638

Change-Id: Ib46ab0e8a2f50f3da66bff35053b7a0bdebeb112
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>