NewScraper creates a new Scraper object which tracks the kube-apiserver pods in the specified dataRegistry and populates the registry back with metrics scraped from the pods.
Scraper tracks the kube-apiserver pods in a [input_data_registry.InputDataRegistry] and populates the registry back with metrics scraped from the pods
Remarks: The current Scraper implementation is meant for seeds which contain 20-6000 shoot kube-apiserver pods.