Updated openstack/openstack
Project: openstack/taskflow  2fcf67d6b91476260cc09fc04cbe86c134ad4f20

Remove attrdict and just use existing types

In order to make it simpler (and less code) just prefer to use
object types that already exist instead of trying to make dictionaries
also behave like objects.

For those that really need this kind of functionality:

https://pypi.python.org/pypi/attrdict

Change-Id: Ib7ddfa517f0500082fafac2c3e53fd6a158a6ddf