Problem was incorrect condition on wsrep_check_sequence
when ENGINE!=InnoDB.
Fix is not use DB_TYPE_XXX because it is not correct
on dynamic storage engines. Instead used storage engine
name is looked from thd->lex->m_sql_cmd->option_storage_engine_name.
For CREATE TABLE allow anyting except ENGINE=SEQUENCE.
For CREATE SEQUENCE only ENGINE=InnoDB is supported.
For ALTER TABLE if original table contains sequence information
only ENGINE=InnoDB is supported.
Signed-off-by: Julius Goryavsky <julius.goryavsky@mariadb.com>