Support azure storage, add examples

[haorenfsa]

/cc @mintcckey @zwd1208

[codecov]

Codecov Report

Patch coverage: 100.00% and project coverage change: +0.02% 🎉

Comparison is base (0383f78) 80.14% compared to head (3234589) 80.16%.

Additional details and impacted files

@@            Coverage Diff             @@
##             main      #15      +/-   ##
==========================================
+ Coverage   80.14%   80.16%   +0.02%     
==========================================
  Files          47       47              
  Lines        4754     4760       +6     
==========================================
+ Hits         3810     3816       +6     
  Misses        797      797              
  Partials      147      147              

Files Changed	Coverage Δ
pkg/util/util.go	92.07% <ø> (ø)
pkg/controllers/conditions.go	89.71% <100.00%> (ø)
pkg/external/kafka.go	100.00% <100.00%> (ø)
pkg/external/minio.go	91.30% <100.00%> (+1.30%)	⬆️

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[sre-ci-robot]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: haorenfsa, mintcckey

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[sre-ci-robot]

New changes are detected. LGTM label has been removed.