Now that the DataPersistenceProvider instance is store in the
RaftActorContext, we no longer need to pass it to various other classes
methods that have access to the RaftActorContext instance.
Change-Id: Iccbfac82819451e28432e15f5eb970fded4b181e Signed-off-by: Tom Pantelis <tpanteli@brocade.com>