Set split key min and max on MongoInputSplits created with createSplitFromBounds.

This reverts some of the changes made by a2f662f.

Author: Luke Lovett

core/src/main/java/com/mongodb/hadoop/splitter/MongoCollectionSplitter.java

@@ -222,6 +222,8 @@ public MongoInputSplit createSplitFromBounds(final BasicDBObject lowerBound, fin
         }
         if (split == null) {
             split = new MongoInputSplit(getConfiguration());
+            split.setMin(splitMin);
+            split.setMax(splitMax);
         }
         return split;
     }