mount: outsideContainerClusterMode proxy through filer

Running mount outside of the cluster would not need to expose all the volume servers to outside of the cluster. The chunk read and write will go through the filer.

weed/replication/source/filer_source.go

@@ -124,10 +124,6 @@ func (fs *FilerSource) WithFilerClient(fn func(filer_pb.SeaweedFilerClient) erro
 
 }
 
-func (fs *FilerSource) AdjustedUrl(location *filer_pb.Location) string {
-	return location.Url
-}
-
 func volumeId(fileId string) string {
 	lastCommaIndex := strings.LastIndex(fileId, ",")
 	if lastCommaIndex > 0 {