# Pastebin 5SPioRkS
from keystoneclient.auth import conf


class OpenStackClients(object):
    """Convenience class to create and cache client instance."""

    def __init__(self, context=None):
        self._context = context
        self.reset_clients()

        conf.register_conf_options(cfg.CONF, "keystone_authtoken")
        auth_plugin_name = cfg.CONF.keystone_authtoken.auth_plugin
        if auth_plugin_name == 'password':
            plugin_options = conf.get_plugin_options(auth_plugin_name)
            cfg.CONF.register_opts(plugin_options, "keystone_authtoken")
        else:
            raise exception.AuthorizationFailure(
                message=(_(
                    "auth_plugin (%(auth_plugin)s) is not valid. "
                    "Only 'password' auth plugin is supported.") %
                        {'auth_plugin': auth_plugin_name}))


...

    def _get_admin_credentials(self):

        creds = {'auth_url': cfg.CONF.keystone_authtoken.auth_url,
                 'username': cfg.CONF.keystone_authtoken.username,
                 'password': cfg.CONF.keystone_authtoken.password,
                 'project_name': cfg.CONF.keystone_authtoken.project_name}