The original version, mean gkp pune exp do have pantry, the same rake are used for Pune Manduadih EXP, which do have pantry. Quite possible it has pantry, if the same rakes are being used. But chances are quite less.
go to the news section, where they have details of summer special train of cr. there they have complete schedule, rake config, rake sharing arrangement, engine..... maintainence info. so u will know it all. its a pdf doc. And since u have a baby on board my personal advice wud be carry your own stuff.