Fix hadoop conf dir path for Hadoop 2.x
Fix hadoop conf dir path for Hadoop 2.x

mapr/shark,amplab/shark,mattyb149/blinkdb,alabid/blinkdb,sjyk/sampleclean,sjyk/sampleclean,mattyb149/blinkdb,sameeragarwal/blinkdb,lzshlzsh/shark,sameeragarwal/blinkdb,mattyb149/blinkdb,amplab/shark,alabid/blinkdb,mapr/shark,lzshlzsh/shark,sameeragarwal/blinkdb,sjyk/sampleclean,lzshlzsh/shark,amplab/shark,mapr/shark,alabid/blinkdb