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

[mmorel-35]

Description

This uses testify instead of testing for t.Fatal calls

Related to #18972

[k8s-ci-robot]

Hi @mmorel-35. Thanks for your PR.

I'm waiting for a etcd-io member to verify that this patch is reasonable to test. If it is, they should reply with /ok-to-test on its own line. Until that is done, I will not automatically test new commits in this PR, but the usual testing commands by org members will still work. Regular contributors should join the org to skip this step.

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[mmorel-35]

/assign @spzala

[codecov-commenter]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 68.68%. Comparing base (3d46df1) to head (6a8afb9).

Additional details and impacted files

see 27 files with indirect coverage changes

@@            Coverage Diff             @@
##             main   #18820      +/-   ##
==========================================
- Coverage   68.77%   68.68%   -0.09%     
==========================================
  Files         420      420              
  Lines       35598    35598              
==========================================
- Hits        24483    24452      -31     
- Misses       9685     9711      +26     
- Partials     1430     1435       +5     

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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
Once this PR has been reviewed and has the lgtm label, please ask for approval from ahrtr. For more information see the Kubernetes Code Review Process.

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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

[mmorel-35]

/retest

[mmorel-35]

/retest

[mmorel-35]

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

[mmorel-35]

I hold on this to apply gofumpt first

[mmorel-35]

/retest

[ahrtr]

Please breakdown this PR to smaller ones, thanks