fix: use require instead of t.Fatal(err) in tests/e2e package

[mmorel-35]

This uses testify instead of testing for t.Fatal calls

[k8s-ci-robot]

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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 68.79%. Comparing base (3de0018) to head (ddbde7c).

❗ Current head ddbde7c differs from pull request most recent head 7f2d0fa

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Additional details and impacted files

see 24 files with indirect coverage changes

@@            Coverage Diff             @@
##             main   #18821      +/-   ##
==========================================
+ Coverage   68.76%   68.79%   +0.03%     
==========================================
  Files         420      420              
  Lines       35523    35523              
==========================================
+ Hits        24426    24439      +13     
+ Misses       9665     9658       -7     
+ Partials     1432     1426       -6     

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[mmorel-35]

/assign @ahrtr

[ahrtr]

/ok-to-test

[k8s-ci-robot]

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