[Feature][Conenctor-V2] Add openmldb source connector

[TyrantLucifer]

Purpose of this pull request

Add openmldb source connector #3018

Check list

• Code changed are covered with tests, or it does not need tests for reason:
• If any new Jar binary package adding in your PR, please add License Notice according
  New License Guide
• If necessary, please update the documentation to describe the new feature. https://github.com/apache/incubator-seatunnel/tree/dev/docs
• If you are contributing the connector code, please check that the following files are updated:
  1. Update change log that in connector document. For more details you can refer to connector-v2
  2. Update plugin-mapping.properties and add new connector information in it
  3. Update the pom file of seatunnel-dist

[TyrantLucifer]

openmldb only support these data types:

spark integration test:

flink integration test:

[ashulin]

Can you add an e2e use case？

[TyrantLucifer]

Can you add an e2e use case？

OpenMldb image need change ip address that in config files. Ip can not be code name，so that use test container to write e2e is impossible and I desided to do the integration test instead of it.

[TaoZex]

Can you add an e2e use case？

OpenMldb image need change ip address that in config files. Ip can not be code name，so that use test container to write e2e is impossible and I desided to do the integration test instead of it.

Doris was the same way. I was trying to automatically change ip address through shell script when docker was opened.

[TyrantLucifer]

Can you add an e2e use case？

OpenMldb image need change ip address that in config files. Ip can not be code name，so that use test container to write e2e is impossible and I desided to do the integration test instead of it.

Doris was the same way. I was trying to automatically change ip address through shell script when docker was opened.

Test container uses hostname to assign ip to container, how do I get the real ip address and change it in container? If you have good ideas to solve this problem, can you do this work or give some guides to me?

[TaoZex]

Can you add an e2e use case？

OpenMldb image need change ip address that in config files. Ip can not be code name，so that use test container to write e2e is impossible and I desided to do the integration test instead of it.

Doris was the same way. I was trying to automatically change ip address through shell script when docker was opened.

Test container uses hostname to assign ip to container, how do I get the real ip address and change it in container? If you have good ideas to solve this problem, can you do this work or give some guides to me?

I'm trying to do this, and I'll let you know if I get any good news.

[hailin0]

Please implement TableSourceFactory

[wuchunfu]

LGTM, It looks good overall