[ldapfeed] don't crash if one specify an unexisting group in the configuration. Closes #2538399
# copyright 2003-2011 LOGILAB S.A. (Paris, FRANCE), all rights reserved.# contact http://www.logilab.fr/ -- mailto:contact@logilab.fr## This file is part of CubicWeb.## CubicWeb is free software: you can redistribute it and/or modify it under the# terms of the GNU Lesser General Public License as published by the Free# Software Foundation, either version 2.1 of the License, or (at your option)# any later version.## CubicWeb is distributed in the hope that it will be useful, but WITHOUT# ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS# FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License for more# details.## You should have received a copy of the GNU Lesser General Public License along# with CubicWeb. If not, see <http://www.gnu.org/licenses/>.fromcubicweb.entitiesimportAnyEntity,fetch_configclassSociete(AnyEntity):__regid__='Societe'fetch_attrs=('nom',)classPersonne(Societe):"""customized class forne Person entities"""__regid__='Personne'fetch_attrs,cw_fetch_order=fetch_config(['nom','prenom'])rest_attr='nom'classNote(AnyEntity):__regid__='Note'