Use protobuf encoding for core K8s APIs in secrets-store-csi-driver (#…

…455)

Co-authored-by: Abhijeet Dargude <[email protected]>

main.go

@@ -42,6 +42,7 @@ import (
 	"google.golang.org/api/option"
 	"google.golang.org/grpc"
 	"google.golang.org/grpc/credentials"
+	"k8s.io/apimachinery/pkg/runtime"
 	"k8s.io/client-go/kubernetes"
 	"k8s.io/client-go/rest"
 	"k8s.io/client-go/tools/clientcmd"
@@ -101,6 +102,7 @@ func main() {
 		klog.ErrorS(err, "failed to read kubeconfig")
 		klog.Fatal("failed to read kubeconfig")
 	}
+	rc.ContentType = runtime.ContentTypeProtobuf
 
 	clientset, err := kubernetes.NewForConfig(rc)
 	if err != nil {