Stop at first match

[parrasajad]

Proposed changes

• Add template level stop-at-first-match option to stop execution if a match is found.
• Works for all the protocols.
• Example:

id: dmarc-detect

info:
  name: dmarc-detect
  author: brenocss
  severity: info
  tags: dns,dmarc

stop-at-first-match: true
dns:
  - name: _dmarc.{{FQDN}}
    type: TXT
    class: inet
    recursion: true
    retries: 3
    matchers:
      - type: word
        words:
          - "v=dmarc1"
          - "v=DMARC1"
  - name: _dmarc.{{RDN}}
    type: TXT
    class: inet
    recursion: true
    retries: 3
    matchers:
      - type: word
        words:
          - "v=dmarc1"
          - "v=DMARC1"

Checklist

• Pull request is created against the dev branch
• All checks passed (lint, unit/integration/regression tests etc.) with my changes
• I have added tests that prove my fix is effective or that my feature works
• I have added necessary documentation (if appropriate)

[Ice3man543]

Very nice PR @parrasajad! lgtm. I had just one small comment.