fix(http): handle axios error code UNABLE_TO_VERIFY_LEAF_SIGNATURE

[syamsudotdev]

Monika Pull Request (PR)

This PR resolves #1266

What feature/issue does this PR add

1. Handle axios error code UNABLE_TO_VERIFY_LEAF_SIGNATURE

How did you implement / how did you fix it

1. Map error code UNABLE_TO_VERIFY_LEAF_SIGNATURE to error code 27
2. Map error code UNABLE_TO_VERIFY_LEAF_SIGNATURE to error codename ELEAFSIGNATURE
3. Add documentation for error code 27

How to test

1. Create monika.yml config below

probes:
  - id: 'Example'
    requests:
      - url: https://kemendesa.go.id/

2. npm run start -- -r 1
3. On 5th failure, expect to see warning log id:Example ERROR: EINVALIDLEAFSIGN: Unable to verify the first / leaf certificate., NOTIF: Service probably down

[codecov]

Codecov Report

Attention: Patch coverage is 0% with 1 lines in your changes are missing coverage. Please review.

Project coverage is 62.51%. Comparing base (1eb87eb) to head (044bab7).

Files	Patch %	Lines
src/components/probe/prober/http/request.ts	0.00%	1 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #1267      +/-   ##
==========================================
- Coverage   62.59%   62.51%   -0.08%     
==========================================
  Files         112      112              
  Lines        3390     3391       +1     
  Branches      591      591              
==========================================
- Hits         2122     2120       -2     
- Misses       1077     1079       +2     
- Partials      191      192       +1     

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[dennypradipta]

CMIIW, is the UNABLE_TO_VERIFY_LEAF_SIGNATURE the same as the CERT_HAS_EXPIRED?

If by chance it is different, maybe you could add CERT_HAS_EXPIRED as well.

[dennypradipta]

On second thought, the CERT_HAS_EXPIRED happens if you don't use --ignoreInvalidTLS, but UNABLE_TO_VERIFY_LEAF_SIGNATURE still happens. Carry on then

[dennypradipta]

LGTM

[raosan]

LGTM