Add http debug tests

[doublnt]

You need to complete

• [ ] unit tests and/or feature tests
• [ ] documentation is changed or added

[codecov-io]

Codecov Report

Merging #139 into master will increase coverage by 1.65%. The diff coverage is n/a.

@@            Coverage Diff             @@
##           master     #139      +/-   ##
==========================================
+ Coverage   95.87%   97.53%   +1.65%     
==========================================
  Files          53       53              
  Lines        2597     2597              
  Branches      239      239              
==========================================
+ Hits         2490     2533      +43     
+ Misses         77       37      -40     
+ Partials       30       27       -3

Impacted Files	Coverage Δ
aliyun-net-sdk-core/Profile/DefaultProfile.cs	94.09% <0%> (+1.36%)	:arrow_up:
aliyun-net-sdk-core/Http/HttpResponse.cs	95.76% <0%> (+5.08%)	:arrow_up:
aliyun-net-sdk-core/DefaultAcsClient.cs	85.84% <0%> (+7.76%)	:arrow_up:
...et-sdk-core/Regions/DescribeEndpointServiceImpl.cs	100% <0%> (+13.51%)	:arrow_up:
aliyun-net-sdk-core/Utils/DictionaryUtil.cs	100% <0%> (+19.44%)	:arrow_up:

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