castellan is providing a default for key_manager/backend, 'barbican' https://github.com/openstack/castellan/blob/0.14.0/castellan/key_manager/__init__.py#L24-L30
cinder is expecting that value to be an importable class https://github.com/openstack/cinder/blob/master/cinder/keymgr/__init__.py#L29
castellan is providing a default for key_manager/ backend, 'barbican' /github. com/openstack/ castellan/ blob/0. 14.0/castellan/ key_manager/ __init_ _.py#L24- L30
https:/
cinder is expecting that value to be an importable class /github. com/openstack/ cinder/ blob/master/ cinder/ keymgr/ __init_ _.py#L29
https:/