LioAdm object has no attribute 'update_iscsi_target'

update_iscsi_target was implemented for TgtAdm but does not exist for the IetAdm or LioAdm classes. Needs to at least have a stub added to the TargetAdmin class.

When using iscsi_helper="lioadm":

2014-01-27 18:24:57.884 ERROR cinder.volume.manager [req-52b8e9f2-d862-4054-b029-bcb374485b24 c7cfb70e637e40d3
bb91b7dacbcf26fa dfc65160e685427385cb3c22478b56ef] Unable to fetch connection information from backend: 'LioAd
m' object has no attribute 'update_iscsi_target'
2014-01-27 18:24:57.885 ERROR cinder.openstack.common.rpc.amqp [req-52b8e9f2-d862-4054-b029-bcb374485b24 c7cfb70e637e40d3bb91b7dacbcf26fa dfc65160e685427385cb3c22478b56ef] Exception during message handling
2014-01-27 18:24:57.885 TRACE cinder.openstack.common.rpc.amqp Traceback (most recent call last):
2014-01-27 18:24:57.885 TRACE cinder.openstack.common.rpc.amqp File "/opt/stack/cinder/cinder/openstack/common/rpc/amqp.py", line 441, in _process_data
2014-01-27 18:24:57.885 TRACE cinder.openstack.common.rpc.amqp **args)
2014-01-27 18:24:57.885 TRACE cinder.openstack.common.rpc.amqp File "/opt/stack/cinder/cinder/openstack/common/rpc/dispatcher.py", line 148, in dispatch
2014-01-27 18:24:57.885 TRACE cinder.openstack.common.rpc.amqp return getattr(proxyobj, method)(ctxt, **kwargs)
2014-01-27 18:24:57.885 TRACE cinder.openstack.common.rpc.amqp File "/opt/stack/cinder/cinder/volume/manager.py", line 755, in initialize_connection
2014-01-27 18:24:57.885 TRACE cinder.openstack.common.rpc.amqp raise exception.VolumeBackendAPIException(data=err_msg)
2014-01-27 18:24:57.885 TRACE cinder.openstack.common.rpc.amqp VolumeBackendAPIException: Bad or unexpected response from the storage volume backend API: Unable to fetch connection information from backend: 'LioAdm' object has no attribute 'update_iscsi_target'
2014-01-27 18:24:57.885 TRACE cinder.openstack.common.rpc.amqp