Extracts properties needed by novaclient call from the request object.

    These will be used to memoize the calls to novaclient.

def get_auth_params_from_request(request):
    """Extracts properties needed by novaclient call from the request object.

    These will be used to memoize the calls to novaclient.
    """
    return (
        request.user.username,
        request.user.token.id,
        request.user.tenant_id,
        request.user.token.project.get('domain_id'),
        base.url_for(request, 'compute'),
        base.url_for(request, 'identity')
    )