feat: workload labels #2865

Job	Run time
golangci-lint	3m 17s
bin	5m 43s
conform	19s
test	5m 33s
test-export-gcm	2m 16s
validate	5m 56s
e2e-testruns	1m 31s
test-script-gcm	1m 19s
e2e-test (^TestAlertmanager$)	6m 6s
e2e-test (^TestTLS$)	10m 53s
e2e-test (^TestBasicAuthNoPassword$)	10m 5s
e2e-test (^TestBasicAuthNoUsername$)	11m 53s
e2e-test (^TestBasicAuth$)	11m 30s
e2e-test (^TestAuthNoCredentials$)	11m 6s
e2e-test (^TestAuth$)	9m 48s
e2e-test (^TestOAuth2NoSecret$)	10m 22s
e2e-test (^TestOAuth2$)	11m 16s
e2e-test (^TestCollectorPodMonitoring$)	7m 20s
e2e-test (^TestCollectorClusterPodMonitoring$)	7m 19s
e2e-test (^TestCollectorKubeletScraping$)	5m 56s
e2e-test (^TestRuleEvaluatorNoCompression$)	5m 58s
e2e-test (^TestRuleEvaluatorGzipCompression$)	5m 54s
e2e-test (^TestWebhooksNoRBAC$)	5m 47s
	2h 37m 7s

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