Bug 2340: Fixed chained Tx not ready prior next create

On new*Transaction, utilized the new State classes to obtain
the previous Tx's ready Futures and pass then to the new
ChainedTransactionProxy. This makes it deterministic so that
a Tx will always get ready Futures from the previous Tx.

Change-Id: Icc017285bd5ceb118e98d3e38ec9a10a9144155e
Signed-off-by: tpantelis <tpanteli@brocade.com>