Enhancement deuce context swift full

Finishes the conversion for the Swift using the Deuce Context

Depends on PR #80 
What I mean is that the following is repeated verbatim:

     storage_url, token = self.get_Auth_Token()
     from deuce.tests import DummyContextObject 
     import deuce
     deuce.context = DummyContextObject()
     deuce.context.openstack = DummyContextObject()
     deuce.context.openstack.auth_token = token


That's redundant and not necessary. Plus, it's duplicated and not needed. 

Why not put this in a function?