S3AInputStream/OutputStream statistics aren't getting into StorageStatistics

when the input and output stream stats are merged into the S3AInstrumentation, the FS statistics aren't updated to match, so FS statistics don't track things like aggregate throttle count, TCP aborts, bytes discarded etc. They are metrics, but not sotrage stats

They should be, which requires S3AInstrumentation to take the StorageStats in its constructor and then update.