feat(multiple block post): Swift and Disk

Deuce:
    POST v1/{vaultname}/blocks
        -Request body : msgpacked content of
                        dictionary of blockid
                        and blockdata
Swift:
    Asynchronous multiple block post
    py27 - gevent
    py33,34 - aiohttp and asyncio
            - lacks exception handling
Disk:
    Reference Driver
    Synchronous multiple block post
@TheSriram - For brevity, original had 'driver' and 'swift_module' above 'testing'. It doesn't really make a difference, but would probably be good form to keep the change to as minimal as possible, easier on merges elsewhere in case of others changing it too. $0.02 (no hold up on that)