[WIP] e2e: add the e2e tests for rate limit of download, upload and prefetch

[chlins]

Description

Related Issue

Motivation and Context

Screenshots (if appropriate)

Types of changes

• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to change)
• Documentation Update (if none of the other choices apply)

Checklist

• My change requires a change to the documentation.
• I have updated the documentation accordingly.
• I have read the CONTRIBUTING document.
• I have added tests to cover my changes.

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 35.24%. Comparing base (547ebe2) to head (26bd48c).

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #3728      +/-   ##
==========================================
+ Coverage   35.18%   35.24%   +0.05%     
==========================================
  Files         335      335              
  Lines       37803    37803              
==========================================
+ Hits        13301    13323      +22     
+ Misses      23673    23652      -21     
+ Partials      829      828       -1     

Flag	Coverage Δ
unittests	35.24% <ø> (+0.05%)	⬆️

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see 5 files with indirect coverage changes