feat: support etcd authentication

[PowderLi]

issue: #28895
add 3 configuration for ETCD config

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Codecov Report

Attention: 9 lines in your changes are missing coverage. Please review.

Comparison is base (5be9099) 80.36% compared to head (e0b0d2a) 82.01%.

❗ Current head e0b0d2a differs from pull request most recent head 668b7da. Consider uploading reports for the commit 668b7da to get more accurate results

Additional details and impacted files

@@            Coverage Diff             @@
##           master   #28912      +/-   ##
==========================================
+ Coverage   80.36%   82.01%   +1.65%     
==========================================
  Files         931      862      -69     
  Lines      128508   122076    -6432     
==========================================
- Hits       103272   100123    -3149     
+ Misses      21842    18630    -3212     
+ Partials     3394     3323      -71     

Files	Coverage Δ
internal/distributed/datacoord/service.go	88.06% <100.00%> (+0.36%)	⬆️
internal/distributed/datanode/service.go	78.60% <100.00%> (+0.38%)	⬆️
internal/distributed/indexnode/service.go	71.34% <100.00%> (+0.53%)	⬆️
internal/distributed/proxy/service.go	82.44% <100.00%> (+0.17%)	⬆️
internal/distributed/querycoord/service.go	74.67% <100.00%> (+0.33%)	⬆️
internal/distributed/querynode/service.go	80.48% <100.00%> (+0.28%)	⬆️
internal/distributed/rootcoord/service.go	80.86% <100.00%> (+1.30%)	⬆️
internal/kv/etcd/metakv_factory.go	70.73% <100.00%> (+2.31%)	⬆️
internal/util/dependency/kv/kv_client_handler.go	89.18% <100.00%> (+0.95%)	⬆️
pkg/config/etcd_source.go	73.19% <100.00%> (+0.85%)	⬆️
... and 6 more

... and 330 files with indirect coverage changes

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@PowderLi: Failed to re-open PR: state cannot be changed. The master-etcd-authentication branch was force-pushed or recreated.

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@PowderLi: Failed to re-open PR: state cannot be changed. The master-etcd-authentication branch was force-pushed or recreated.

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