Create testing_clustering.py

[ramya-koteswari]

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In case of fundamental code change, Airflow Improvement Proposal (AIP) is needed.
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[boring-cyborg]

Congratulations on your first Pull Request and welcome to the Apache Airflow community! If you have any issues or are unsure about any anything please check our Contribution Guide (https://github.com/apache/airflow/blob/main/CONTRIBUTING.rst)
Here are some useful points:

• Pay attention to the quality of your code (flake8, mypy and type annotations). Our pre-commits will help you with that.
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[josh-fell]

Was this PR submitted accidentally or perhaps the file that was included is the incorrect one? How does this relate to Airflow?