Using single user authentication, the Swift backup driver cannot create a container.

[Eunbyeol Go]

Using single user authentication,the Swift backup driver cannot create a container.

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cinder.conf is set as follows

backup_driver = cinder.backup.drivers.swift.SwiftBackupDriver
backup_posix_path = /var/lib/cinder/backup
backup_swift_auth = single_user
backup_swift_auth_insecure = true
backup_swift_auth_url = auth_url
backup_swift_auth_version = 3
backup_swift_key = key
backup_swift_project = service
backup_swift_project_domain = service
backup_swift_user = user
backup_swift_user_domain = service

With this configuration, the Swift client's cli was executed successfully.

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An error occurred in the code below.

https://github.com/openstack/cinder/blob/master/cinder/backup/drivers/swift.py#L357