apiservers: add synchronous shutdown mechanism on SIGTERM+INT

cmd/hyperkube/kube-scheduler.go

@@ -31,7 +31,7 @@ func NewScheduler() *Server {
 		AlternativeName: "kube-scheduler",
 		SimpleUsage:     "scheduler",
 		Long:            "Implements a Kubernetes scheduler.  This will assign pods to kubelets based on capacity and constraints.",
-		Run: func(_ *Server, _ []string) error {
+		Run: func(_ *Server, _ []string, stopCh <-chan struct{}) error {
 			return app.Run(s)
 		},
 	}