fix livy in spark 2.0 by using magic within code execution post call
fix livy in spark 2.0 by using magic within code execution post call

kevinykuo/sparklyr,rstudio/sparklyr,rstudio/sparklyr,kevinykuo/sparklyr,kevinykuo/sparklyr,kevinykuo/sparklyr,rstudio/sparklyr,rstudio/sparklyr