Because the parallelCollectionScan is relatively untested and unproven, we want to ensure that in 3.6 users have a way to continue to use the 'find' command until such a time that the parallelCollectionScan has been more proven. To that end, if the system is configured to only request 1 cursor for initial sync anyway, we should use the 'find' command to generate that cursor rather then using parallelCollectionScan with maxCursors=1