Move REPLICATE methods above __call__ to match obj

Move the REPLICATE methods in both the container and the account
server to just before the __call__ method to indicate internal backend
API, and parallel the layout in the object server code.

Change-Id: Ib5c1cb16c03e234a0079e6aface90f9282fc28ee
Signed-off-by: Peter Portante <peter.portante@redhat.com>
Account Backend API

Change-Id: I0c566bd8e3f97a3eed88a094f60ef982ee3e4fa1
Signed-off-by: Peter Portante <peter.portante@redhat.com>