Make BlockStoreShuffleFetcher visible to shuffle package

Author: massie

core/src/main/scala/org/apache/spark/shuffle/hash/BlockStoreShuffleFetcher.scala

@@ -27,7 +27,7 @@ import org.apache.spark.shuffle.FetchFailedException
 import org.apache.spark.storage.{BlockId, BlockManagerId, ShuffleBlockFetcherIterator, ShuffleBlockId}
 import org.apache.spark.util.CompletionIterator
 
-private[hash] object BlockStoreShuffleFetcher extends Logging {
+private[shuffle] object BlockStoreShuffleFetcher extends Logging {
   def fetchBlockStreams(
       shuffleId: Int,
       reduceId: Int,