Perform a detailed analyzes of the current metricbeat index template mapping

[AndersonQ]

The current metricbeat mapping is huge, we've just crossed the 10,000 fields mapped, which include static and dynamic fields.

This issue aims to investigate the current mapping to identify all fields which would allow for new mappings beyond the statically mapped fields. The intent is to list which integration and fields can contribute to the increase of fields on metricbeats index and how likely they are to contribute to an eventual breach of the total fields limit.

[elasticmachine]

Pinging @elastic/elastic-agent-data-plane (Team:Elastic-Agent-Data-Plane)