feat: rule.upstream support insecure_skip_verify

[wei840222]

Related issue(s)

#1201

Checklist

• I have read the contributing guidelines.
• I have referenced an issue containing the design document if my change
  introduces a new feature.
• I am following the
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• I have added tests that prove my fix is effective or that my feature
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Further Comments

[CLAassistant]

All committers have signed the CLA.

[spaghettifunk]

Hi @aeneasr 👋 Would it be possible to merge this PR? It would be great 😄 Thanks for the hard work!