Merge "libsnapshot: Remove invalid snapshot metadata" am: e3cca4a0d1 am: d2611d1c1c am: 0d701c13b6

Original change: https://android-review.googlesource.com/c/platform/system/core/+/2061835

Change-Id: Ica6ad814de0853722fd2e5d4ab41670a29f3f36e
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>