table_type=MySQL (and some other types) to connect only to
  remote MySQL server, do not try to establish embedded connections
  from the running embedded connection.

- Disabling "mtr --embedded" for the tests that need a remote MySQL server.


modified:
  storage/connect/myconn.cpp
  storage/connect/mysql-test/connect/t/occur.test
  storage/connect/mysql-test/connect/t/pivot.test
  storage/connect/mysql-test/connect/t/tbl.test