mysql-test/mysql-test-run.sh:
  Create and export an NDB_CONNECSTRING that can be used for NDB_TOOLS to connect to NDB
mysql-test/r/ndb_autodiscover.result:
  Added more advanced test cases for ndb_autodiscover
mysql-test/t/ndb_autodiscover.test:
  Added more advanced test cases for ndb_autodiscover