Autoset a nicer job name prefix, depending on dist_test support
Autoset a nicer job name prefix, depending on dist_test support

umbrant/dist_test,xiao-chen/dist_test,xiao-chen/dist_test,umbrant/dist_test,umbrant/dist_test,xiao-chen/dist_test,umbrant/dist_test,cloudera/dist_test,cloudera/dist_test,xiao-chen/dist_test,cloudera/dist_test,cloudera/dist_test