Fix --trusted-host is not copied from *.in to *.txt

[atugushev]

Fixes #963.

Changelog-friendly one-liner: Fix pip-compile doesn't copy --trusted-host from requirements.in to requirements.txt.

Contributor checklist

• Provided the tests for the changes.
• Gave a clear one-line description in the PR (that the maintainers can add to CHANGELOG.md on release).
• Assign the PR to an existing or new milestone for the target version (following Semantic Versioning).

[codecov]

Codecov Report

Merging #964 into master will increase coverage by <.01%.
The diff coverage is 100%.

@@            Coverage Diff             @@
##           master     #964      +/-   ##
==========================================
+ Coverage   99.18%   99.19%   +<.01%     
==========================================
  Files          35       35              
  Lines        2338     2358      +20     
  Branches      301      303       +2     
==========================================
+ Hits         2319     2339      +20     
  Misses         11       11              
  Partials        8        8

Impacted Files	Coverage Δ
piptools/scripts/compile.py	100% <ø> (ø)	⬆️
piptools/utils.py	100% <100%> (ø)	⬆️
tests/test_utils.py	100% <100%> (ø)	⬆️
tests/test_cli_compile.py	100% <100%> (ø)	⬆️

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[altendky]

Looked over code and confirmed it works as expected locally.

[altendky]

Oh yeah... thanks!

[nasirhjafri]

Looks good to me 👍

[codingjoe]

I believe the have been more than enough reviews. So I am going to save myselthe trouble, ok?

[atugushev]

@webknjaz thanks for taking the time reviewing this! All request changes seem resolved, are we okay with this or are there any other issues?

[atugushev]

@webknjaz @nasirhjafri @altendky thanks for reviewing this! 🎉