**** CubicPower OpenStack Study ****
def append_v3_routers(mapper, routers):
auth_controller = controllers.Auth()
mapper.connect('/auth/tokens',
controller=auth_controller,
action='authenticate_for_token',
conditions=dict(method=['POST']))
mapper.connect('/auth/tokens',
controller=auth_controller,
action='check_token',
conditions=dict(method=['HEAD']))
mapper.connect('/auth/tokens',
controller=auth_controller,
action='revoke_token',
conditions=dict(method=['DELETE']))
mapper.connect('/auth/tokens',
controller=auth_controller,
action='validate_token',
conditions=dict(method=['GET']))
mapper.connect('/auth/tokens/OS-PKI/revoked',
controller=auth_controller,
action='revocation_list',
conditions=dict(method=['GET']))