test: expose misconfigured interfaces by downloading large-enough files

[jadarsie]

Reason for Change:

Adding an E2E test that downloads a file big enough to expose misconfigured network interfaces MTUs.

Issue Fixed:

Related to #3367

Requirements:

• uses conventional commit messages
• includes documentation
• adds unit tests
• tested upgrade from previous version

[codecov]

Codecov Report

Merging #3412 into master will not change coverage.
The diff coverage is n/a.

@@           Coverage Diff           @@
##           master    #3412   +/-   ##
=======================================
  Coverage   73.17%   73.17%           
=======================================
  Files         147      147           
  Lines       24923    24923           
=======================================
  Hits        18238    18238           
  Misses       5559     5559           
  Partials     1126     1126           

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[jackfrancis]

/lgtm

[acs-bot]

[APPROVALNOTIFIER] This PR is APPROVED

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