StreamingSource reports metrics for lastCompletedBatch instead of lastReceivedBatch

StreamingSource's lastReceivedBatch_submissionTime, lastReceivedBatch_processingTimeStart, and lastReceivedBatch_processingTimeEnd all use data from lastCompletedBatch instead of lastReceivedBatch. In particular, this makes it impossible to match lastReceivedBatch_records with a batchID/submission time.
This is apparent when looking at StreamingSource.scala, lines 89-94.
I would guess that just replacing Completed->Received in those lines would fix the issue, but I haven't tested it.