failed to get table information (julien-duponchelle#199)

should specify information_schema schema name.

Author: Zhanwei Wang

pymysqlreplication/binlogstream.py

@@ -498,7 +498,7 @@ def __get_table_information(self, schema, table):
                         COLUMN_NAME, COLLATION_NAME, CHARACTER_SET_NAME,
                         COLUMN_COMMENT, COLUMN_TYPE, COLUMN_KEY
                     FROM
-                        columns
+                        information_schema.columns
                     WHERE
                         table_schema = %s AND table_name = %s
                     """, (schema, table))