Add user agent to logs

[jonathangreen]

Description

If we are logging in the context of a flask request, include the user agent in the logs.

Motivation and Context

When troubleshooting with the logs, there has been a couple times where it would have been helpful to know what user agent triggered a particular log line.

How Has This Been Tested?

• Added unit test

Checklist

• I have updated the documentation accordingly.
• All new and existing tests passed.

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 90.77%. Comparing base (b136123) to head (5d551c5).
Report is 5 commits behind head on main.

Additional details and impacted files

@@           Coverage Diff           @@
##             main    #2048   +/-   ##
=======================================
  Coverage   90.77%   90.77%           
=======================================
  Files         342      342           
  Lines       40513    40515    +2     
  Branches     8770     8771    +1     
=======================================
+ Hits        36774    36776    +2     
  Misses       2484     2484           
  Partials     1255     1255           

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[tdilauro]

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