Description of domain configuration options

Configuration option = Default value	Description
[DEFAULT]
proxy_user_domain_name = None	(StrOpt) The domain Sahara will use to create new proxy users for Swift object access.
proxy_user_role_names = Member	(ListOpt) A list of the role names that the proxy user should assume through trust for Swift object access.
use_domain_for_proxy_users = False	(BoolOpt) Enables Sahara to use a domain for creating temporary proxy users to access Swift. If this is enabled a domain must be created for Sahara to use.