?v -> ?v=true to workaround the sigv4 bug

[mikaylathompson]

Description

There's a bug in our sigv4 dependency for requests that breaks when a url has a query param with no value. So ?v fails but ?v=true succeeds.

Issues Resolved

https://opensearch.atlassian.net/browse/MIGRATIONS-2023

Testing

Manual

Check List

• New functionality includes testing
  • All tests pass, including unit test, integration test and doctest
• New functionality has been documented
• Commits are signed per the DCO using --signoff

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[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 80.31%. Comparing base (b26db7f) to head (574d110).
Report is 1 commits behind head on main.

Additional details and impacted files

@@             Coverage Diff              @@
##               main    #1031      +/-   ##
============================================
- Coverage     80.39%   80.31%   -0.08%     
+ Complexity     2729     2726       -3     
============================================
  Files           366      366              
  Lines         13617    13617              
  Branches        942      942              
============================================
- Hits          10947    10937      -10     
- Misses         2095     2106      +11     
+ Partials        575      574       -1     

Flag	Coverage Δ
gradle-test	78.30% <ø> (-0.09%)	⬇️
python-test	90.11% <100.00%> (ø)

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[peternied]

I think this is a good work around, thanks for creating the issue on the source library [1]

• [1] A signature can't be generated with a url with a query param with no value andrewjroth/requests-auth-aws-sigv4#20