Use ListObjects V1 fallback for GCS S3 endpoints

As GCP's S3 interoperability does not implement the ListObjectsV2
implementation.

Ref: https://cloud.google.com/storage/docs/interoperability

> Note: While most actions are interoperable with the Amazon S3 V2 SDK,
> listing objects can only be performed using the Amazon S3 V1 list
> objects method.

Signed-off-by: Hidde Beydals <[email protected]>

Author: hiddeco

controllers/bucket_controller.go

@@ -30,6 +30,7 @@ import (
 	"github.com/go-logr/logr"
 	"github.com/minio/minio-go/v7"
 	"github.com/minio/minio-go/v7/pkg/credentials"
+	"github.com/minio/minio-go/v7/pkg/s3utils"
 	corev1 "k8s.io/api/core/v1"
 	apimeta "k8s.io/apimachinery/pkg/api/meta"
 	metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
@@ -201,7 +202,10 @@ func (r *BucketReconciler) reconcile(ctx context.Context, bucket sourcev1.Bucket
 	}
 
 	// download bucket content
-	for object := range s3Client.ListObjects(ctxTimeout, bucket.Spec.BucketName, minio.ListObjectsOptions{Recursive: true}) {
+	for object := range s3Client.ListObjects(ctxTimeout, bucket.Spec.BucketName, minio.ListObjectsOptions{
+		Recursive: true,
+		UseV1:     s3utils.IsGoogleEndpoint(*s3Client.EndpointURL()),
+	}) {
 		if object.Err != nil {
 			err = fmt.Errorf("listing objects from bucket '%s' failed: %w", bucket.Spec.BucketName, object.Err)
 			return sourcev1.BucketNotReady(bucket, sourcev1.BucketOperationFailedReason, err.Error()), err