file size support set file length

use Attr.FileSize and TotalChunkSize to determine file size

weed/replication/sink/azuresink/azure_sink.go

@@ -95,7 +95,7 @@ func (g *AzureSink) CreateEntry(key string, entry *filer_pb.Entry) error {
 		return nil
 	}
 
-	totalSize := filer2.TotalSize(entry.Chunks)
+	totalSize := filer2.FileSize(entry)
 	chunkViews := filer2.ViewFromChunks(g.filerSource.LookupFileId, entry.Chunks, 0, int64(totalSize))
 
 	// Create a URL that references a to-be-created blob in your