Add E2E large request test

[AndreKurait]

Description

Add E2E large request test
Fix documentation for E2E target_password

This task builds on top of #637

• Category: Enhancement
• Why these changes are required? Current E2E script misses tests on large requests which can have differing behavior
• What is the old behavior before changes and new behavior after changes? New Test which checks behavior for 20MB requests

Issues Resolved

[List any issues this PR will resolve]

Is this a backport? If so, please add backport PR # and/or commits #

Testing

Ran tests

Check List

• [ x] New functionality includes testing
  • [ x] All tests pass, including unit test, integration test and doctest
• [x ] New functionality has been documented
• [x ] 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 75.61%. Comparing base (82690c5) to head (c2d7337).
Report is 1 commits behind head on main.

Additional details and impacted files

@@             Coverage Diff              @@
##               main     #636      +/-   ##
============================================
- Coverage     75.64%   75.61%   -0.04%     
+ Complexity     1542     1541       -1     
============================================
  Files           168      168              
  Lines          6455     6455              
  Branches        575      575              
============================================
- Hits           4883     4881       -2     
- Misses         1190     1191       +1     
- Partials        382      383       +1     

Flag	Coverage Δ
unittests	75.61% <ø> (-0.04%)	⬇️

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