feat(alerting): alert teams add client insecure option

[raojinlin]

Summary

support insecure option for Teams alert

Fixes #819

Checklist

• [x] Tested and/or added tests to validate that the changes work as intended, if applicable.
• [x] Updated documentation in README.md, if applicable.

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Codecov Report

All modified and coverable lines are covered by tests :white_check_mark:

Project coverage is 78.98%. Comparing base (de2d41e) to head (b3c4bbd).

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Additional details and impacted files

```diff @@ Coverage Diff @@ ## master #864 +/- ## ======================================= Coverage 78.98% 78.98% ======================================= Files 71 71 Lines 4772 4772 ======================================= Hits 3769 3769 Misses 794 794 Partials 209 209 ```

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