configurable for load and stat statistics logs

[kevwan]

No description provided.

[codecov]

Codecov Report

Merging #980 (c3936f3) into master (4bee60e) will increase coverage by 0.03%.
The diff coverage is 85.71%.

@@            Coverage Diff             @@
##           master     #980      +/-   ##
==========================================
+ Coverage   81.80%   81.83%   +0.03%     
==========================================
  Files         250      250              
  Lines       13167    13177      +10     
==========================================
+ Hits        10771    10784      +13     
+ Misses       2030     2026       -4     
- Partials      366      367       +1     

Impacted Files	Coverage Δ
core/stat/usage.go	30.00% <0.00%> (-2.15%)	⬇️
core/load/adaptiveshedder.go	100.00% <100.00%> (ø)
core/load/sheddingstat.go	100.00% <100.00%> (+32.25%)	⬆️
core/stores/redis/process.go	46.66% <0.00%> (-53.34%)	⬇️
core/stringx/random.go	83.78% <0.00%> (-8.11%)	⬇️
zrpc/internal/balancer/p2c/p2c.go	90.98% <0.00%> (-2.46%)	⬇️
core/stores/sqlx/tx.go	38.09% <0.00%> (+14.28%)	⬆️

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