changes to add support for remote monitors in alerting

[sbcd90]

Description

changes to add support for remote monitors in alerting

Issues Resolved

https://github.com/opensearch-project/alerting/issues/1546

Check List

• [X] New functionality includes testing.
  • [X] All tests pass
• [ ] New functionality has been documented.
  • [ ] New functionality has javadoc added
• [X] Commits are signed per the DCO using --signoff

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[eirsep]

what about the åctual fan out logic?