minor change to Flume config
minor change to Flume config

nvoron23/hadoop-arch-book,nvoron23/hadoop-arch-book,hadooparchitecturebook/hadoop-arch-book,nvoron23/hadoop-arch-book,smartpcr/hadoop-arch-book,smartpcr/hadoop-arch-book,smartpcr/hadoop-arch-book,hadooparchitecturebook/hadoop-arch-book,hadooparchitecturebook/hadoop-arch-book