chore: Wrap OpenAIDefaults for Python

[Shyam Sai (sss04)]

Related Issues/PRs

#xxx

What changes are proposed in this pull request?

Wrap OpenAIDefaults to work for PySpark, and add URL as a OpenAIDefault.

How is this patch tested?

• I have written tests (not required for typo or doc fix) and confirmed the proposed feature/bug-fix/change works.

Does this PR change any dependencies?

• No. You can skip this section.
• Yes. Make sure the dependencies are resolved correctly, and list changes here.

Does this PR add a new feature? If so, have you added samples on website?

• No. You can skip this section.
• Yes. Make sure you have added samples following below steps.

1. Find the corresponding markdown file for your new feature in website/docs/documentation folder.
   Make sure you choose the correct class estimators/transformers and namespace.
2. Follow the pattern in markdown file and add another section for your new API, including pyspark, scala (and .NET potentially) samples.
3. Make sure the DocTable points to correct API link.
4. Navigate to website folder, and run yarn run start to make sure the website renders correctly.
5. Don't forget to add <!--pytest-codeblocks:cont--> before each python code blocks to enable auto-tests for python samples.
6. Make sure the WebsiteSamplesTests job pass in the pipeline.

[Mark Hamilton (mhamilton723)]

/azp run

[azure-pipelines]

Azure Pipelines successfully started running 1 pipeline(s).

[Shyam Sai (sss04)]

/azp run

[azure-pipelines]

Azure Pipelines successfully started running 1 pipeline(s).

[Shyam Sai (sss04)]

/azp run

[azure-pipelines]

Azure Pipelines successfully started running 1 pipeline(s).

[Shyam Sai (sss04)]

/azp run

[azure-pipelines]

Azure Pipelines successfully started running 1 pipeline(s).

[Mark Hamilton (mhamilton723)]

/azp run

[azure-pipelines]

Azure Pipelines successfully started running 1 pipeline(s).

[Codecov Comments Bot (codecov-commenter)]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 84.48%. Comparing base (4a6a041) to head (ad42fcd).
Report is 36 commits behind head on master.

Additional details and impacted files

@@            Coverage Diff             @@
##           master    #2327      +/-   ##
==========================================
+ Coverage   83.21%   84.48%   +1.26%     
==========================================
  Files         328      328              
  Lines       16786    16799      +13     
  Branches     1501     1498       -3     
==========================================
+ Hits        13968    14192     +224     
+ Misses       2818     2607     -211     

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