Clustering : Distributed Datastore does not work properly with Transaction Chains

When a consumer requests a Transaction Chain the distributed datastore returns a proxy transaction chain. However since it does not know which Shard the request for creation of the transaction chain needs to be directed to it does not attempt to create a transaction chain.

Furthermore when a new transaction is created on the transaction chain it just creates a regular transaction (without using the chain). This needs to be fixed for transaction chaining to work properly with distributed datastore.