Parameters for Kafka Engine Updated to Include kafka_row_delimiter

Parameters for Kafka engine was changed from Kafka(kafka_broker_list, kafka_topic_list, kafka_group_name, kafka_format[, kafka_schema, kafka_num_consumers]) to Kafka(kafka_broker_list, kafka_topic_list, kafka_group_name, kafka_format[, kafka_row_delimiter, kafka_schema, kafka_num_consumers]). If your tables use kafka_schema or kafka_num_consumers parameters, you have to manually edit the metadata files path/metadata/database/table.sql and add kafka_row_delimiter parameter with '' value.