ignore swapped drives instead of throwing errors (#13655)

- add checks such that swapped disks are detected
  and ignored - never used for normal operations.

- implement `unrecognizedDisk` to be ignored with
  all operations returning `errDiskNotFound`.

- also add checks such that we do not load unexpected
  disks while connecting automatically.

- additionally humanize the values when printing the errors.

Bonus: fixes handling of non-quorum situations in
getLatestFileInfo(), that does not work when 2 drives
are down, currently this function would return errors
incorrectly.

cmd/object-api-common.go

@@ -283,8 +283,6 @@ func listObjects(ctx context.Context, obj ObjectLayer, bucket, prefix, marker, d
 
 	// List until maxKeys requested.
 	g := errgroup.WithNErrs(maxKeys).WithConcurrency(maxConcurrent)
-	ctx, cancel := g.WithCancelOnError(ctx)
-	defer cancel()
 
 	objInfoFound := make([]*ObjectInfo, maxKeys)
 	var i int
@@ -345,8 +343,10 @@ func listObjects(ctx context.Context, obj ObjectLayer, bucket, prefix, marker, d
 			break
 		}
 	}
-	if err := g.WaitErr(); err != nil {
-		return loi, err
+	for _, err := range g.Wait() {
+		if err != nil {
+			return loi, err
+		}
 	}
 	// Copy found objects
 	objInfos := make([]ObjectInfo, 0, i+1)