Fix liveliness test

[RiccardoM]

Description

This PR tries to fix the liveliness test

Checklist

• Targeted PR against correct branch.
• Linked to Github issue with discussion and accepted design OR link to spec that describes this work.
• Wrote unit tests.
• Wrote integration tests (simulation & CLI).
• Updated the documentation.
• Added an entry to the CHANGELOG.md file.
• Re-reviewed Files changed in the Github PR explorer.

[codecov]

Codecov Report

Merging #443 (996b7dc) into master (ba96d47) will not change coverage.
The diff coverage is n/a.

❗ Current head 996b7dc differs from pull request most recent head dcb298b. Consider uploading reports for the commit dcb298b to get more accurate results

@@           Coverage Diff           @@
##           master     #443   +/-   ##
=======================================
  Coverage   72.13%   72.13%           
=======================================
  Files          73       73           
  Lines        3456     3456           
=======================================
  Hits         2493     2493           
  Misses        864      864           
  Partials       99       99           

Impacted Files	Coverage Δ
app/app.go	83.14% <ø> (ø)

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