Add support for org.apache.commons:commons-dbcp2:2.9.0

[linghengqian]

What does this PR do?

• Fixes Add support for org.apache.commons:commons-dbcp2:2.9.0 #202 .
• Fixes Add support for org.apache.commons:commons-dbcp2:2.9.0 #224.
• Add support for org.apache.commons:commons-dbcp2:2.9.0.
• Some unreasonable behavior is tracked in Custom ClassLoader behaves differently under JVM and Native Image graal#5913.

Code sections where the PR accesses files, network, docker or some external service

• (example link to code section)
• Null.

Checklist before merging

• I have considered including reachability metadata directly in the library or the framework (see our contributing document)
• I am the original author of all content provided in the pull request, and I did not copy the content from any other source (see the tests section from our contributing document)
• For all tests where I am not the sole author, I have added a comment that proves I may publish them under the specified license (see the tests section from our contributing document)
• I have properly formatted metadata files (see our formatting guide)
• I have added thorough tests (see the tests section from our contributing document)
• I have filled all places where my pull request accesses files, network, docker, or any other external service (see the section above)

[msupic]

Tests from this class require only the following metadata:

• reflect-config.json

[
  {
    "name":"org.apache.commons.dbcp2.PoolingDriver"
  }
]

• resource-config.json

{
    "bundles": [
        {
            "name": "org.apache.commons.dbcp2.LocalStrings"
        }
    ]
}

So please modify metadata in the metadata/org.apache.commons/commons-dbcp2/2.9.0 folder or add more tests which would require other metadata.

Also I am not sure that org.apache.commons.dbcp2.PoolingDriver should be added to the reflect-config.json file in the main metadata directory since Class.forName("org.apache.commons.dbcp2.PoolingDriver"); is called in the test not in the commons-dbcp2 library itself, so that metadata entry should probably go to the tests/src/org.apache.commons/commons-dbcp2/2.9.0/src/test/resources/META-INF/native-image/dbcp2-test-only/reflect-config.json file. @vjovanov - your thoughts?

[linghengqian]

• On the ShardingSphere side, the integration test for DBCP has been successfully moved from the main repository to https://github.com/apache/shardingsphere-plugin . PR and the corresponding issue are no longer meaningful.