Enrich cloud-provider to all data passing a gateway

[a-thaler]

Description

Often it is very useful to drill down data via infrastructure elements like region or zones. You can already do that by figuring out the right nodes and the drill down by node. However, that is more complicated and it will be great to have the cloud provider data available on the data itself as resource attributes.

For that you can try to use the ResourceDetectionProcessor, potentially with a custom implementation also reading data from the shoot-info and the node labels, however, it looks like that this processor typically runs per node.
A different approach might be to re-use the existing k8sattributeprocessor and just read the relevant node labels additionally.

Relevant sources for the data are the shoot-info configmap in the kube-system namespace and labels on the nodes itself.