for #1216, add insert multiple values test cases 7th.
for #1216, add insert multiple values test cases 7th.

leeyazhou/sharding-jdbc,apache/incubator-shardingsphere,apache/incubator-shardingsphere,apache/incubator-shardingsphere,leeyazhou/sharding-jdbc,leeyazhou/sharding-jdbc,apache/incubator-shardingsphere,leeyazhou/sharding-jdbc