[FLINK-19675][python] Fix PythonCalcExpandProjectRule to handle cases when the calc node contains WHERE clause, composite fields access and Python UDF at the same time

[dianfu]

What is the purpose of the change

This pull request fix PythonCalcExpandProjectRule to handle cases when the calc node contains WHERE clause, composite fields access and Python UDF at the same time

Brief change log

• Fix rule PythonCalcExpandProjectRule

Verifying this change

This change added tests and can be verified as follows:

• Added tests testPythonFunctionMixedWithJavaFunctionInWhereClause

Does this pull request potentially affect one of the following parts:

• Dependencies (does it add or upgrade a dependency): (no)
• The public API, i.e., is any changed class annotated with @Public(Evolving): (no)
• The serializers: (no)
• The runtime per-record code paths (performance sensitive): (no)
• Anything that affects deployment or recovery: JobManager (and its components), Checkpointing, Kubernetes/Yarn/Mesos, ZooKeeper: (no)
• The S3 file system connector: (no)

Documentation

• Does this pull request introduce a new feature? (no)
• If yes, how is the feature documented? (not applicable)

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Automated Checks

Last check on commit 9becc81 (Thu Oct 22 12:07:14 UTC 2020)

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• ❓ 1. The [description] looks good.
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• ❓ 3. Needs [attention] from.
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• ❓ 5. Overall code [quality] is good.

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CI report:

• 9becc81 Azure: SUCCESS Azure: FAILURE

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[HuangXingBo]

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[HuangXingBo]

@dianfu Thanks a lot for the quick fix. LGTM

[dianfu]

@HuangXingBo Thanks a lot for the review. Merging...