feat: support to skip tls when download file

[LinuxSuRen]

No description provided.

[codecov]

Codecov Report

Merging #348 (0ae335b) into master (b80f4f5) will increase coverage by 0.14%.
The diff coverage is 82.75%.

@@            Coverage Diff             @@
##           master     #348      +/-   ##
==========================================
+ Coverage   60.12%   60.26%   +0.14%     
==========================================
  Files          63       64       +1     
  Lines        3330     3370      +40     
==========================================
+ Hits         2002     2031      +29     
- Misses       1226     1234       +8     
- Partials      102      105       +3     

Flag	Coverage Δ
unittests	60.26% <82.75%> (+0.14%)	⬆️

Flags with carried forward coverage won't be shown. Click here to find out more.

Impacted Files	Coverage Δ
pkg/os/apt/docker.go	12.83% <0.00%> (ø)
cmd/get.go	68.02% <55.00%> (-1.30%)	⬇️
pkg/net/multi_thread.go	87.23% <87.23%> (ø)
pkg/net/http.go	78.72% <89.28%> (-2.05%)	⬇️
pkg/os/generic_installer.go	61.88% <100.00%> (ø)

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