Add list direct-csi drives api (#643)

Add direct-csi volumes list api

Co-authored-by: Daniel Valdivia <hola@danielvaldivia.com>

cluster/cluster.go

@@ -17,6 +17,7 @@
 package cluster
 
 import (
+	direct "github.com/minio/direct-csi/pkg/clientset"
 	operator "github.com/minio/operator/pkg/client/clientset/versioned"
 	"k8s.io/client-go/kubernetes"
 	"k8s.io/client-go/rest"
@@ -63,3 +64,8 @@ func OperatorClient(token string) (*operator.Clientset, error) {
 func K8sClient(token string) (*kubernetes.Clientset, error) {
 	return kubernetes.NewForConfig(GetK8sConfig(token))
 }
+
+// DirectCSIClient returns Direct CSI client using GetK8sConfig for its config
+func DirectCSIClient(token string) (*direct.Clientset, error) {
+	return direct.NewForConfig(GetK8sConfig(token))
+}