qiniu api v7.6.0; add debug info for http.DefaultClient

[sxci]

变更背景描述

升级到 qiniu api v7.6.0 ;
qiniu/api.v7 kodo 相关 http 使用了 自定义的 Client 支持打印 http 请求头、请求体；
qiniu/api.v7 cdn 等 api ，使用了 http.DefaultClient ，也添加打印 http 请求头、请求体 能力

qshell -d 打印请求头、响应头
qshell -D 打印请求头、请求体、响应头、响应体

jira issue链接

https://jira.qiniu.io/browse/TS-1030

主要变更点

• []fix bug
• [v]new feature
• []不兼容变更

Checklist

• [v] 已自测
• [] 已更新Readme

[qiniu-bot]

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[codecov]

Codecov Report

Attention: Patch coverage is 0% with 36 lines in your changes missing coverage. Please review.

Project coverage is 6.36%. Comparing base (2ab8bc4) to head (ad12113).
Report is 1067 commits behind head on master.

Files with missing lines	Patch %	Lines
cmd/root.go	0.00%	36 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff            @@
##           master    #288      +/-   ##
=========================================
- Coverage    6.76%   6.36%   -0.41%     
=========================================
  Files          40      40              
  Lines        4876    4492     -384     
=========================================
- Hits          330     286      -44     
+ Misses       4540    4201     -339     
+ Partials        6       5       -1     

Files with missing lines	Coverage Δ
cmd/root.go	8.69% <0.00%> (-7.70%)	⬇️

... and 39 files with indirect coverage changes