koordlet: add more cli flags for audit log and ensure the audit log directory exist

[LeoLiuYan]

Signed-off-by: LeoLiuYan 929908264@qq.com

Ⅰ. Describe what this PR does

1. add more cli flags for audit log
2. ensure the audit log directory exist

Ⅱ. Does this pull request fix one issue?

NONE

Ⅲ. Describe how to verify it

Ⅳ. Special notes for reviews

V. Checklist

• I have written necessary docs and comments
• I have added necessary unit tests and integration tests
• All checks passed in make test

[codecov]

Codecov Report

Base: 66.63% // Head: 66.65% // Increases project coverage by +0.01% 🎉

Coverage data is based on head (0b1f0b7) compared to base (52c3fa8).
Patch coverage: 35.29% of modified lines in pull request are covered.

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #912      +/-   ##
==========================================
+ Coverage   66.63%   66.65%   +0.01%     
==========================================
  Files         240      240              
  Lines       27769    27784      +15     
==========================================
+ Hits        18505    18520      +15     
- Misses       7992     7993       +1     
+ Partials     1272     1271       -1     

Flag	Coverage Δ
unittests	66.65% <35.29%> (+0.01%)	⬆️

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

Impacted Files	Coverage Δ
pkg/koordlet/audit/event_logger.go	65.53% <26.66%> (-3.98%)	⬇️
pkg/koordlet/audit/config.go	100.00% <100.00%> (ø)
pkg/util/httputil/reverseproxy.go	84.84% <0.00%> (+0.53%)	⬆️
pkg/koordlet/runtimehooks/reconciler/reconciler.go	67.05% <0.00%> (+5.29%)	⬆️

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[LeoLiuYan]

@zwzhang0107 @jasonliu747 @saintube Please review the code when you having any idle time.

[zwzhang0107]

/lgtm

[zwzhang0107]

/approve

[koordinator-bot]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: zwzhang0107

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• pkg/koordlet/OWNERS [zwzhang0107]

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