Revert "Set failureThreshold to 3 for improved stability"

[xuezhaojun]

Reverts #214

The failureThreshould set to 1 on purpose: https://github.com/open-cluster-management-io/addon-framework/blob/d787e984afdabb410ac6e93aa703e836c367031b/pkg/utils/config_checker.go#L76

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[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 15.36%. Comparing base (ea838c0) to head (3f1dd23).

Additional details and impacted files

@@           Coverage Diff           @@
##             main     #215   +/-   ##
=======================================
  Coverage   15.36%   15.36%           
=======================================
  Files          32       32           
  Lines        2011     2011           
=======================================
  Hits          309      309           
  Misses       1680     1680           
  Partials       22       22           

Flag	Coverage Δ
unit	15.36% <ø> (ø)

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