add stability level to aggregator metrics and drop blank line in cmd file

cmd/kube-apiserver/apiserver.go

@@ -29,7 +29,6 @@ import (
 )
 
 func main() {
-
 	rand.Seed(time.Now().UnixNano())
 
 	command := app.NewAPIServerCommand()

staging/src/k8s.io/kube-aggregator/pkg/controllers/status/metrics.go

@@ -26,6 +26,7 @@ var (
 		&metrics.CounterOpts{
 			Name:           "aggregator_unavailable_apiservice_count",
 			Help:           "Counter of APIServices which are marked as unavailable broken down by APIService name and reason.",
+			StabilityLevel: metrics.ALPHA,
 		},
 		[]string{"name", "reason"},
 	)
@@ -33,6 +34,7 @@ var (
 		&metrics.GaugeOpts{
 			Name:           "aggregator_unavailable_apiservice",
 			Help:           "Gauge of APIServices which are marked as unavailable broken down by APIService name.",
+			StabilityLevel: metrics.ALPHA,
 		},
 		[]string{"name"},
 	)