accept both 'paste', 'paste0'
accept both 'paste', 'paste0'

cc: da39a3ee5e6b4b0d3255bfef95601890afd80709@Alexloannides

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