meminfo: memevents: Adding OOM tests am: 1755b53899 am: 42052d4fb0

Original change: https://android-review.googlesource.com/c/platform/system/memory/libmeminfo/+/2755696

Change-Id: I39e94f06254535a6aa48f8a425b17d0d56aa888a
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>