Fix/logstash indexing

[makelicious]

Issue:

1. Logstash was unable to index logs to elasticsearch.
2. On version 8, elasticsearch became ECS compliant by default.
3. This caused the accepted payload to change. The 400 error went unnoticed. Most likely since we re use logstash to deliver those to us.

Solution:

1. Rename host to host.name in order to follow ECS
2. Add ecs-logstash index to config.ndjson to read errors from.

[github-actions]

Oops! Looks like you forgot to update the changelog. When updating CHANGELOG.md, please consider the following:

• Changelog is read by country implementors who might not always be familiar with all technical details of OpenCRVS. Keep language high-level, user friendly and avoid technical references to internals.
• Answer "What's new?", "Why was the change made?" and "Why should I care?" for each change.
• If it's a breaking change, include a migration guide answering "What do I need to do to upgrade?".