test: resolve flaky e2e tests

[jonas-jonas]

Related issue(s)

Checklist

• I have read the contributing guidelines.
• I have referenced an issue containing the design document if my change
  introduces a new feature.
• I am following the
  contributing code guidelines.
• I have read the security policy.
• I confirm that this pull request does not address a security
  vulnerability. If this pull request addresses a security vulnerability, I
  confirm that I got the approval (please contact
  [email protected]) from the maintainers to push
  the changes.
• I have added tests that prove my fix is effective or that my feature
  works.
• I have added or changed the documentation.

Further Comments

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 78.06%. Comparing base (de8e59c) to head (fbb7d6d).

Additional details and impacted files

@@           Coverage Diff           @@
##           master    #3935   +/-   ##
=======================================
  Coverage   78.05%   78.06%           
=======================================
  Files         362      362           
  Lines       25342    25342           
=======================================
+ Hits        19781    19783    +2     
- Misses       4043     4044    +1     
+ Partials     1518     1515    -3     

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[hperl]

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