change dr elephant version back to master
change dr elephant version back to master

ekeroid/hopsworks-chef,ekeroid/hopsworks-chef,hopshadoop/hopsworks-chef,ekeroid/hopsworks-chef,hopshadoop/hopsworks-chef,hopshadoop/hopsworks-chef,hopshadoop/hopsworks-chef,ekeroid/hopsworks-chef