cmd/kg/main.go: replace deprecated prom collectors (#255)

Signed-off-by: leonnicolas <leonloechner@gmx.de>

cmd/kg/main.go

@@ -29,6 +29,7 @@ import (
 	"github.com/go-kit/kit/log/level"
 	"github.com/oklog/run"
 	"github.com/prometheus/client_golang/prometheus"
+	"github.com/prometheus/client_golang/prometheus/collectors"
 	"github.com/prometheus/client_golang/prometheus/promhttp"
 	"github.com/spf13/cobra"
 	apiextensions "k8s.io/apiextensions-apiserver/pkg/client/clientset/clientset"
@@ -171,8 +172,8 @@ func preRun(_ *cobra.Command, _ []string) error {
 
 	registry = prometheus.NewRegistry()
 	registry.MustRegister(
-		prometheus.NewGoCollector(),
-		prometheus.NewProcessCollector(prometheus.ProcessCollectorOpts{}),
+		collectors.NewGoCollector(),
+		collectors.NewProcessCollector(collectors.ProcessCollectorOpts{}),
 	)
 
 	return nil