bugfix: use os.Create to write env rendered file

[kakaZhou719]

Describe what this PR does / why we need it

os.OpenFile(strings.TrimSuffix(path, templateSuffix), os.O_CREATE|os.O_RDWR, os.ModePerm)

if file is exits, without O_TRUNC mod, will leads to uncontrollable results. so we do better use os.Create to write rendered file.

Does this pull request fix one issue?

Describe how you did it

Describe how to verify it

Special notes for reviews

[codecov-commenter]

Codecov Report

Patch coverage: 100.00% and project coverage change: -6.43 ⚠️

Comparison is base (006e1db) 19.34% compared to head (1567540) 12.91%.

📣 This organization is not using Codecov’s GitHub App Integration. We recommend you install it so Codecov can continue to function properly for your repositories. Learn more

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #2175      +/-   ##
==========================================
- Coverage   19.34%   12.91%   -6.43%     
==========================================
  Files          96      260     +164     
  Lines        8919    22228   +13309     
==========================================
+ Hits         1725     2870    +1145     
- Misses       6953    18967   +12014     
- Partials      241      391     +150     

Flag	Coverage Δ
e2e-tests	8.60% <ø> (?)
unit-tests	19.34% <100.00%> (ø)

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

Impacted Files	Coverage Δ
pkg/env/env.go	50.98% <100.00%> (ø)

... and 164 files with indirect coverage changes

Help us with your feedback. Take ten seconds to tell us how you rate us. Have a feature suggestion? Share it here.

☔ View full report in Codecov by Sentry.
📢 Do you have feedback about the report comment? Let us know in this issue.

[Stevent-fei]

LGTM