fix: set max_header_size not effect, not recycle a bad conn for http1

[alpha-baby]

Issues associated with this PR

#2328 #2368

Solutions

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UT result

Unit Test is needed if the code is changed, your unit test should cover boundary cases, corner cases, and some exceptional cases. And you need to show the UT result.

Benchmark

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Code Style

• Make sure Goimports has run
• Show Golint result

[codecov]

Codecov Report

Attention: 19 lines in your changes are missing coverage. Please review.

Comparison is base (9935770) 60.70% compared to head (338d844) 60.71%.
Report is 5 commits behind head on master.

Files	Patch %	Lines
pkg/stream/http/stream.go	0.00%	14 Missing ⚠️
pkg/stream/http/connpool.go	0.00%	5 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##           master    #2369      +/-   ##
==========================================
+ Coverage   60.70%   60.71%   +0.01%     
==========================================
  Files         422      426       +4     
  Lines       37568    37734     +166     
==========================================
+ Hits        22804    22909     +105     
- Misses      12526    12576      +50     
- Partials     2238     2249      +11     

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[doujiang24]

lgtm