Bump IpMemoryStore schema to 5, add NetworkEvents table am: 58852780a7

Original change: https://android-review.googlesource.com/c/platform/packages/modules/NetworkStack/+/3245180

Change-Id: I8c7c8fd91a6fe606706df3a85f16db3e47552e2e
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>