Add Request-Module header when requesting endpoint

[AlbumenJ]

Sync with https://github.com/alibaba/nacos/blob/develop/client/src/main/java/com/alibaba/nacos/client/naming/utils/NamingHttpUtil.java

[CLAassistant]

All committers have signed the CLA.

[binbin0325]

LGTM

[codecov-commenter]

Codecov Report

Attention: 6 lines in your changes are missing coverage. Please review.

Comparison is base (28188c7) 29.65% compared to head (0d4b123) 29.79%.

❗ Current head 0d4b123 differs from pull request most recent head 76bf38d. Consider uploading reports for the commit 76bf38d to get more accurate results

Files	Patch %	Lines
common/nacos_server/nacos_server.go	33.33%	4 Missing ⚠️
clients/naming_client/naming_proxy_delegate.go	77.77%	1 Missing and 1 partial ⚠️

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Additional details and impacted files

@@            Coverage Diff             @@
##           master     #685      +/-   ##
==========================================
+ Coverage   29.65%   29.79%   +0.13%     
==========================================
  Files          40       40              
  Lines        3136     3145       +9     
==========================================
+ Hits          930      937       +7     
- Misses       2136     2137       +1     
- Partials       70       71       +1     

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