fix: use require instead of t.Fatal(err) in tests/integration package

[mmorel-35]

This uses testify instead of testing for t.Fatal calls

[k8s-ci-robot]

Hi @mmorel-35. Thanks for your PR.

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[mmorel-35]

/assign @spzala

[codecov-commenter]

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Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 68.76%. Comparing base (995027f) to head (475803a).

❗ Current head 475803a differs from pull request most recent head 44eda63

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Additional details and impacted files

see 23 files with indirect coverage changes

@@            Coverage Diff             @@
##             main   #18820      +/-   ##
==========================================
- Coverage   68.79%   68.76%   -0.03%     
==========================================
  Files         420      420              
  Lines       35523    35523              
==========================================
- Hits        24437    24428       -9     
- Misses       9658     9669      +11     
+ Partials     1428     1426       -2     

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[mmorel-35]

/assign @ahrtr

[ahrtr]

/ok-to-test

[k8s-ci-robot]

[APPROVALNOTIFIER] This PR is NOT APPROVED

This pull-request has been approved by: mmorel-35
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[ahrtr]

Please try to breakdown the PR. We love small PR to make the review easy, although this PR is just mechanical changes.
Thanks

[mmorel-35]

/test pull-etcd-integration-1-cpu-amd64