Add scrape_samples_scraped to all metric sources (#1081) #592

Job	Run time
List tests	3s
Integration Test (annotation-autodiscovery)	3m 11s
Integration Test (auth)	3m 49s
Integration Test (auto-instrumentation)	2m 17s
Integration Test (cluster-monitoring)	4m 12s
Integration Test (control-plane-monitoring)	3m 42s
Integration Test (integration-cert-manager)	2m 37s
Integration Test (integration-grafana)	3m 36s
Integration Test (integration-loki)	3m 46s
Integration Test (integration-mysql)	3m 52s
Integration Test (profiling)	2m 7s
Integration Test (prometheus-io-annotations)	3m 19s
Integration Test (sharded-kube-state-metrics)	3m 4s
Integration Test (statsd)	3m 14s
	42m 49s

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