[receiver/k8scluster] Unify predefined and custom node metrics #24776
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Update node metrics description and units to be consistent and remove predefined metrics definitions from metadata.yaml because they are controlled by
node_conditions_to_report
andallocatable_types_to_report
config options. Having two controls to enable/disable metrics would be confusing. Currently, most of the predefined metrics are marked as enabled, but in reality onlyk8s.node.condition_ready
is reported by default.Potentially, later we could introduce support of metadata.yaml definitions for metrics matching particular globs like
k8s.node.condition_*
or move the variable path of the metric name to an attribute