feat: [2.4] root privileges can be customized

[SimFG]

• issue: [Enhancement]: Support custom root privileges #39184
• pr: feat: root privileges can be customized #39191

[codecov]

Codecov Report

Attention: Patch coverage is 60.00000% with 14 lines in your changes missing coverage. Please review.

Project coverage is 80.43%. Comparing base (ca7ecdb) to head (382dd1e).
Report is 3 commits behind head on 2.4.

Files with missing lines	Patch %	Lines
internal/proxy/meta_cache_testonly.go	50.00%	8 Missing and 2 partials ⚠️
internal/rootcoord/root_coord.go	20.00%	3 Missing and 1 partial ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##              2.4   #39325      +/-   ##
==========================================
- Coverage   80.46%   80.43%   -0.04%     
==========================================
  Files        1079     1080       +1     
  Lines      169889   169950      +61     
==========================================
- Hits       136703   136701       -2     
- Misses      28696    28749      +53     
- Partials     4490     4500      +10     

Files with missing lines	Coverage Δ
internal/proxy/privilege_interceptor.go	82.63% <100.00%> (-2.11%)	⬇️
pkg/util/paramtable/component_param.go	98.40% <100.00%> (+<0.01%)	⬆️
internal/rootcoord/root_coord.go	87.78% <20.00%> (-0.13%)	⬇️
internal/proxy/meta_cache_testonly.go	50.00% <50.00%> (ø)

... and 41 files with indirect coverage changes

[czs007]

/approve
/lgtm

[sre-ci-robot]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: czs007, SimFG

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