chore: update audit duration buckets

[stek29]

What this PR does / why we need it:
Updates Audit Duration metric (audit_duration_seconds) with longer time period buckets.
See #2197 for more info.

[stek29]

I don't think that test failure has anything to do with my changes, I'll try to push a reworded commit to trigger new run.

[codecov-commenter]

Codecov Report

Merging #2234 (485ef47) into master (8f6d95a) will increase coverage by 0.12%.
The diff coverage is 100.00%.

@@            Coverage Diff             @@
##           master    #2234      +/-   ##
==========================================
+ Coverage   54.34%   54.46%   +0.12%     
==========================================
  Files         111      111              
  Lines        9538     9538              
==========================================
+ Hits         5183     5195      +12     
+ Misses       3954     3946       -8     
+ Partials      401      397       -4     

Flag	Coverage Δ
unittests	54.46% <100.00%> (+0.12%)	⬆️

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

Impacted Files	Coverage Δ
pkg/audit/stats_reporter.go	77.55% <100.00%> (ø)
pkg/controller/config/config_controller.go	64.10% <0.00%> (ø)
...onstrainttemplate/constrainttemplate_controller.go	58.03% <0.00%> (+1.91%)	⬆️
pkg/readiness/list.go	91.17% <0.00%> (+11.76%)	⬆️

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[ritazh]

LGTM

Thanks @stek29!

[maxsmythe]

LGTM