Implement the configuration for labels and annotations

[houshengbo]

Fixed: #388

[knative-prow]

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[codecov]

Codecov Report

Attention: Patch coverage is 82.60870% with 4 lines in your changes missing coverage. Please review.

Project coverage is 66.49%. Comparing base (2b39ab1) to head (8741ad2).

Files with missing lines	Patch %	Lines
pkg/reconciler/common/namespace.go	80.00%	2 Missing and 2 partials ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #1899      +/-   ##
==========================================
+ Coverage   66.31%   66.49%   +0.17%     
==========================================
  Files          53       54       +1     
  Lines        2084     2107      +23     
==========================================
+ Hits         1382     1401      +19     
- Misses        587      589       +2     
- Partials      115      117       +2     

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