fix: fix deep-learning test flakiness

[serena-ruan]

Related Issues/PRs

None

What changes are proposed in this pull request?

fix deep-learning test flakiness

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.

AB#1914960

[serena-ruan]

/azp run

[github-actions]

Hey @serena-ruan 👋!
Thank you so much for contributing to our repository 🙌.
Someone from SynapseML Team will be reviewing this pull request soon.
We appreciate your patience and contributions 💯!

[azure-pipelines]

Azure Pipelines successfully started running 1 pipeline(s).

[codecov-commenter]

Codecov Report

Merging #1600 (a22bba3) into master (adf1a61) will increase coverage by 3.34%.
The diff coverage is n/a.

@@            Coverage Diff             @@
##           master    #1600      +/-   ##
==========================================
+ Coverage   79.75%   83.10%   +3.34%     
==========================================
  Files         304      310       +6     
  Lines       15768    15823      +55     
  Branches      752      752              
==========================================
+ Hits        12576    13149     +573     
+ Misses       3192     2674     -518     

Impacted Files	Coverage Δ
...ft/azure/synapse/ml/param/JsonEncodableParam.scala	12.85% <0.00%> (-51.43%)	⬇️
...rosoft/azure/synapse/ml/param/WrappableParam.scala	57.14% <0.00%> (-42.86%)	⬇️
...main/python/synapse/ml/io/http/JSONOutputParser.py	66.66% <0.00%> (-16.67%)	⬇️
...re/synapse/ml/cognitive/CognitiveServiceBase.scala	65.03% <0.00%> (-12.59%)	⬇️
...python/synapse/ml/io/http/SimpleHTTPTransformer.py	88.88% <0.00%> (-11.12%)	⬇️
...microsoft/azure/synapse/ml/codegen/Wrappable.scala	89.28% <0.00%> (-10.72%)	⬇️
.../azure/synapse/ml/param/PythonWrappableParam.scala	66.66% <0.00%> (-8.34%)	⬇️
.../azure/synapse/ml/geospatial/AzureMapsTraits.scala	54.54% <0.00%> (-5.46%)	⬇️
...oft/azure/synapse/ml/codegen/DotnetWrappable.scala	83.87% <0.00%> (-5.38%)	⬇️
...re/src/main/python/synapse/ml/core/schema/Utils.py	67.10% <0.00%> (-5.27%)	⬇️
... and 30 more

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[serena-ruan]

/azp run

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[serena-ruan]

/azp run

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[serena-ruan]

/azp run

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[serena-ruan]

/azp run

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[serena-ruan]

/azp run

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Azure Pipelines successfully started running 1 pipeline(s).

[mhamilton723]

yall the best