'Enumerate Instances.'

@lockutils.synchronized('ETERNUS-SMIS-other', 'cinder-', True)
def _enum_eternus_instances(self, classname):

    LOG.debug('_enum_eternus_instances,    classname:    %s.', classname)
    ret = self.conn.EnumerateInstances(classname)
    LOG.debug('_enum_eternus_instances,    enum    %d    instances.', len(ret))
    return ret
