Adapt cinder backup swift help test
Show choices of option `backup_swift_auth`.
@@ -79,7 +79,8 @@ swiftbackup_service_opts = [
cfg.StrOpt('backup_swift_auth',
default='per_user',
choices=['per_user', 'single_user'],
- help='Swift authentication mechanism.'),
+ help='Swift authentication mechanism (per_user or '
+ 'single_user).'),
cfg.StrOpt('backup_swift_auth_version',
default='1',
help='Swift authentication version. Specify "1" for auth 1.0'
