[release-1.15] Fix configuration timeout defaulting

[knative-prow-robot]

This is an automated cherry-pick of #15617

NONE

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 83.56%. Comparing base (45289f5) to head (2d58803).
Report is 1 commits behind head on release-1.15.

Additional details and impacted files

@@               Coverage Diff                @@
##           release-1.15   #15722      +/-   ##
================================================
- Coverage         83.57%   83.56%   -0.01%     
================================================
  Files               219      219              
  Lines             17438    17445       +7     
================================================
+ Hits              14573    14578       +5     
- Misses             2494     2496       +2     
  Partials            371      371              

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[skonto]

/lgtm
/approve

[dprotaso]

/approve

[knative-prow]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: dprotaso, knative-prow-robot, skonto

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