Since we have caches on top of databases and they are included in the
databases list, we need to shut them down in-reverse order to avoid
issues with flushing to a closed database.
Change-Id: I3f23a527a2a5425638b1a7e2cab84741f019d493
Close a peer didn't guarantee that the peer ended its services and we
want that when a StopPeer method returns the peer service is actually
finished.
Change-Id: If97f41b7e404990555640c71e097ebc719678ae7
