client returning error: Invalid client version 1; must be one of: v1

recent refactor seems to have caused a regression
with the client default version, using openstack
client causes this error:

Invalid client version 1; must be one of: v1

Traceback from openstack client:

Traceback (most recent call last):
  File "/usr/local/lib/python2.7/dist-packages/osc_lib/shell.py", line 134, in run
    ret_val = super(OpenStackShell, self).run(argv)
  File "/usr/local/lib/python2.7/dist-packages/cliff/app.py", line 279, in run
    result = self.run_subcommand(remainder)
  File "/usr/local/lib/python2.7/dist-packages/osc_lib/shell.py", line 169, in run_subcommand
    ret_value = super(OpenStackShell, self).run_subcommand(argv)
  File "/usr/local/lib/python2.7/dist-packages/cliff/app.py", line 400, in run_subcommand
    result = cmd.run(parsed_args)
  File "/usr/local/lib/python2.7/dist-packages/cliff/display.py", line 113, in run
    column_names, data = self.take_action(parsed_args)
  File "/opt/stack/python-barbicanclient/barbicanclient/barbican_cli/v1/secrets.py", line 120, in take_action
    obj_list = self.app.client_manager.key_manager.secrets.list(
  File "/usr/local/lib/python2.7/dist-packages/osc_lib/clientmanager.py", line 47, in __get__
    self._handle = self.factory(instance)
  File "/opt/stack/python-barbicanclient/barbicanclient/osc_plugin.py", line 30, in make_client
    region_name=instance._region_name)
  File "/opt/stack/python-barbicanclient/barbicanclient/client.py", line 178, in Client
    raise exceptions.UnsupportedVersion(msg)
UnsupportedVersion: Invalid client version 1; must be one of: v1