使用rdbmsreader读达梦7

1、已经将达梦7下的drivers下的jdbc的驱动15 16 17 18放到了datax/libs 和rdbmsreader下的lib中
2、还是链接数据库有问题，但是电脑本身的dm管理工具是可以连接到的

Start with the rdbmsreader and DataX library locations mentioned in the issue, checking how the DM7 JDBC drivers are loaded. Reproduce the connection failure and compare the DataX error with the DM management tool's successful connection. Done means the cause is identified and the rdbmsreader can connect to DM7 with the documented driver setup.

Written by the indexing model from the issue text.