better replicaiton test cleanup to ensure better test predictability
+ some ndb test cleanup


client/mysqltest.c:
  increase save_master_pos timeout to 30 seconds for higher test predictability
mysql-test/extra/rpl_tests/rpl_ddl.test:
  better replicaiton test cleanup to ensure better test predictability
mysql-test/extra/rpl_tests/rpl_row_UUID.test:
  better replicaiton test cleanup to ensure better test predictability
mysql-test/r/rpl_ndb_dd_advance.result:
  better replicaiton test cleanup to ensure better test predictability
mysql-test/r/rpl_ndb_sync.result:
  better replicaiton test cleanup to ensure better test predictability
mysql-test/t/disabled.def:
  better replicaiton test cleanup to ensure better test predictability
mysql-test/t/rpl_ndb_bank.test:
  better replicaiton test cleanup to ensure better test predictability
mysql-test/t/rpl_ndb_basic.test:
  better replicaiton test cleanup to ensure better test predictability
mysql-test/t/rpl_ndb_dd_advance.test:
  better replicaiton test cleanup to ensure better test predictability
mysql-test/t/rpl_ndb_dd_basic.test:
  better replicaiton test cleanup to ensure better test predictability
mysql-test/t/rpl_ndb_sync.test:
  better replicaiton test cleanup to ensure better test predictability