[test] Add end-to-end tests for all uber jars

[wuchong]

We introduced flink-sql-connectors-xxx for all mysql-cdc, postgres-cdc and mongodb-cdc. This module is used to shade kafka and build an uber jar which is mainly used for SQL clusters. However, we don't have any tests for the uber jars, e.g. does the shading work? do we exclude any needed classes? This can be covered by e2e tests, just like Flink does, see https://github.com/apache/flink/tree/master/flink-end-to-end-tests

[Jiabao-Sun]

@wuchong

I think it may reduce a lot of work if we can dependent on org.apache.flink:flink-end-to-end-tests-common.
Is it possible to publish this to the central repository?

[wuchong]

@Jiabao-Sun , I think it's hard to do it. We can't re-deployed a released version. I think we don't need to depend on flink-end-to-end-tests-common, we can use testcontainers to setup a flink cluster.

[wuchong]

Hi @Jiabao-Sun , what's the status of this issue? Is there anything I can help?

[Jiabao-Sun]

@wuchong Sorry for the delay because it was too busy last week, I expect to finish it this week.

[wuchong]

Thanks @Jiabao-Sun

[wuchong]

Hi @Jiabao-Sun , I can help to finish this issue if you don't have much time, would you mind that? :)

[Jiabao-Sun]

Thanks @wuchong, that's good.
Sorry for not having time to finish it.