Wait until first mysqld in slave cluster has created cluster/apply_status.ndb, put workaround in function workaround_hang_in_select
Add verbose printouts


mysql-test/lib/mtr_process.pl:
  Add verbose printouts
mysql-test/mysql-test-run.pl:
  Wait until first mysqld in slave cluster has created cluster/apply_status.ndb, put workaround in function workaround_hang_in_select