Load an auth plugin and session from options in a config file.

test-conf.py

import sys

from keystoneclient import auth
from keystoneclient import session
from oslo.config import cfg

cfg.CONF(sys.argv[1:])

auth.register_conf_options(cfg.CONF, 'somegroup')
session.Session.register_conf_options(cfg.CONF, 'somegroup')

plugin = auth.load_from_conf_options(cfg.CONF, 'somegroup')
sess = session.Session.load_from_conf_options(cfg.CONF,
                                              'somegroup',
                                              auth=plugin)