Fix helm install error when disable webhook patch

[YaoC]

failurePolicy should be Fail instead of Fails.

[wonderflow]

good catch, thanks

[codecov]

Codecov Report

Merging #1483 (0402a3d) into master (e8ed4d7) will increase coverage by 0.04%.
The diff coverage is n/a.

@@            Coverage Diff             @@
##           master    #1483      +/-   ##
==========================================
+ Coverage   52.99%   53.04%   +0.04%     
==========================================
  Files          85       85              
  Lines        8259     8259              
==========================================
+ Hits         4377     4381       +4     
+ Misses       3350     3347       -3     
+ Partials      532      531       -1     

Flag	Coverage Δ
unittests	53.04% <ø> (+0.04%)	⬆️

Flags with carried forward coverage won't be shown. Click here to find out more.

Impacted Files	Coverage Δ
...aits/traitdefinition/traitdefinition_controller.go	81.39% <0.00%> (+9.30%)	⬆️

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