chore: Add fixture so that benchmark test is also tested in integration tests

[felixwang9817]

Signed-off-by: Felix Wang wangfelix98@gmail.com

What this PR does / why we need it:

Which issue(s) this PR fixes:

Fixes #

[adchia]

/lgtm

[feast-ci-bot]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: achals, adchia, felixwang9817

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[codecov-commenter]

Codecov Report

Merging #3065 (46a3508) into master (e169729) will decrease coverage by 9.23%.
The diff coverage is 53.01%.

@@            Coverage Diff             @@
##           master    #3065      +/-   ##
==========================================
- Coverage   67.28%   58.05%   -9.24%     
==========================================
  Files         169      202      +33     
  Lines       14893    16771    +1878     
==========================================
- Hits        10021     9736     -285     
- Misses       4872     7035    +2163     

Flag	Coverage Δ
integrationtests	?
unittests	58.05% <53.01%> (?)

Flags with carried forward coverage won't be shown. Click here to find out more.

Impacted Files	Coverage Δ
...ffline_stores/contrib/trino_offline_store/trino.py	8.72% <0.00%> (ø)
sdk/python/feast/registry.py	70.96% <0.00%> (-7.85%)	⬇️
...tegration/feature_repos/universal/feature_views.py	34.72% <ø> (-48.62%)	⬇️
...k/python/tests/unit/test_on_demand_feature_view.py	75.00% <ø> (+46.87%)	⬆️
sdk/python/tests/conftest.py	65.24% <31.57%> (-12.99%)	⬇️
sdk/python/feast/diff/registry_diff.py	65.13% <37.50%> (+36.56%)	⬆️
sdk/python/feast/infra/offline_stores/bigquery.py	29.02% <50.00%> (-57.00%)	⬇️
...line_stores/contrib/athena_offline_store/athena.py	38.12% <50.00%> (ø)
..._stores/contrib/postgres_offline_store/postgres.py	35.13% <50.00%> (ø)
...ffline_stores/contrib/spark_offline_store/spark.py	37.41% <50.00%> (ø)
... and 169 more

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