Merge branch 'staging' into sprint-1.19

# Conflicts:
#	go.mod
#	go.sum

Author: dabasov

code/go/0chain.net/blobbercore/handler/storage_handler.go

@@ -485,6 +485,7 @@ func (fsh *StorageHandler) ListEntities(ctx context.Context, r *http.Request) (*
 		dirref = r
 		if path == "/" {
 			dirref.Size = allocationObj.BlobberSizeUsed
+			dirref.NumFiles = int64(allocationObj.NumObjects)
 		}
 	}
 

code/go/0chain.net/blobbercore/reference/ref.go

@@ -42,7 +42,7 @@ func init() {
 		field := refType.Field(i)
 		dirListTag := field.Tag.Get(DIR_LIST_TAG)
 
-		if dirListTag != "" && dirListTag != "is_empty" {
+		if dirListTag != "" && dirListTag != "is_empty" && dirListTag != "num_files" {
 			dirListFields = append(dirListFields, dirListTag)
 		}
 	}
@@ -95,6 +95,7 @@ type Ref struct {
 	SignatureVersion  int            `gorm:"column:signature_version" json:"signature_version" filelist:"signature_version"`
 	EncryptionVersion int            `gorm:"column:encryption_version" json:"encryption_version" filelist:"encryption_version"`
 	IsEmpty           bool           `gorm:"-" dirlist:"is_empty"`
+	NumFiles          int64          `gorm:"-" dirlist:"num_files"`
 	HashToBeComputed  bool           `gorm:"-"`
 	prevID            int64          `gorm:"-"`
 }