[Dune] Use custom load balancer when loading YaspGrid from DGF file

[Jurgis Pods]

Hi Dune,

I guess this is not possible, but just to make sure: When I read a 
YaspGrid from a DGF file, is there a possibility to attach a custom load 
balancer (derived from YLoadBalance) to this newly created grid? I just 
want to make sure that I have the same grid partitioning that I had at 
the time of saving the DGF file.

Best,
Jurgis