Add total # classes to final isolate log message
Add total # classes to final isolate log message

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