added fks to users, fixed hdfs_user_id upstream change
added fks to users, fixed hdfs_user_id upstream change

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