Allow Zone Definition for Hosts through OTel Collector in Instana

When using the OpenTelemetry (OTel) collector to send metrics to the Instana Backend, there is currently no mechanism to define or pass the "zone" attribute for the monitored hosts. This results in all hosts being categorized as "undefined zone" within Instana, regardless of their actual geographical or logical deployment location.

This limitation significantly impacts our ability to:

• Effectively classify metrics: Without zone information, it's challenging to group and analyze metrics based on logical environments (e.g., production, staging, development) or physical locations (e.g., Europe-West-1, US-East-2).
• Manage large-scale monitoring: In environments with hundreds or thousands of monitored hosts, the "undefined zone" status makes it extremely difficult to navigate, filter, and troubleshoot specific host issues, leading to operational inefficiencies.
• Leverage Instana's full potential: The lack of zone information prevents us from fully utilizing Instana's capabilities for segmented dashboards, alerts, and dependency maps, which rely on proper logical grouping of entities.

We request the inclusion of a feature that allows users to explicitly define the zone for hosts when sending metrics via the OTel collector to Instana. This could be achieved through:

• A configuration option in the OTel collector that maps to an Instana zone.
• The ability to pass a custom attribute or tag in the OTel data that Instana can interpret as a zone.