Description of swift configuration options

Configuration option = Default value	Description
[DEFAULT]
default_swift_reference = ref1	(StrOpt) The reference to the default swift account/backing store parameters to use for adding new images.
swift_store_auth_address = None	(StrOpt) The address where the Swift authentication service is listening.(deprecated)
swift_store_config_file = None	(StrOpt) The config file that has the swift account(s)configs.
swift_store_key = None	(StrOpt) Auth key for the user authenticating against the Swift authentication service. (deprecated)
swift_store_user = None	(StrOpt) The user to authenticate against the Swift authentication service (deprecated)