Ftr: add fatal method for logger(config-enhance branch)

[cjphaha]

• Logger 接口添加 fatal 和 fatalf 方法
• 由于 zap 的 fatal 方法会调用 os.Exit 因此导入了 "bou.ke/monkey" 包用于测试 fatal，防止因执行 logger.Fatal 导致单测 ci 失败

[codecov-commenter]

Codecov Report

Merging #1482 (e7b18c0) into config-enhance (2072171) will increase coverage by 0.03%.
The diff coverage is n/a.

@@                Coverage Diff                 @@
##           config-enhance    #1482      +/-   ##
==================================================
+ Coverage           43.16%   43.20%   +0.03%     
==================================================
  Files                 273      273              
  Lines               15179    15179              
==================================================
+ Hits                 6552     6558       +6     
+ Misses               7862     7858       -4     
+ Partials              765      763       -2     

Impacted Files	Coverage Δ
registry/nacos/listener.go	81.73% <0.00%> (+2.60%)	⬆️
cluster/cluster_impl/base_cluster_invoker.go	65.95% <0.00%> (+3.19%)	⬆️

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