Merge "libsnapshot: Do not store CowOperations in memory during writes" am:...

Merge "libsnapshot: Do not store CowOperations in memory during writes" am: 7952a7b0 am: f5a9cde0

Original change: https://android-review.googlesource.com/c/platform/system/core/+/2267006



Change-Id: I4865adb20eb68e5d98e9044bf87d8e75e46ca55d
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>