Add more data to SnapshotMergeReported. am: e35b4380d2 am: 1cccaeae8e

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

Change-Id: I9b5ec168c73596a07e74f6438ef28fa0e001b6f7
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>