I'm afraid it's not possible to do this – in general the only way for a node to own an amount of an asset is if the node has the private key for an address, and some of that asset has been sent to that address on the chain.
You might want to look at the initprivkey runtime parameter which lets a node be started with a particular first private key, instead of a self-generated one. That way you can preload an address with an amount, then start up a new node with the private key corresponding to that address.