Comment 0 for bug 1159616

When running quantum with 'rpc_backend = quantum.openstack.common.rpc.impl_qpid', get error message as below:

2013-03-25 11:32:04 ERROR [quantum.openstack.common.rpc.amqp] Exception during message handling
Traceback (most recent call last):
  File "/home/soulxu/work-code/openstack/quantum/quantum/openstack/common/rpc/amqp.py", line 431, in _process_data
    rval = self.proxy.dispatch(ctxt, version, method, **args)
  File "/home/soulxu/work-code/openstack/quantum/quantum/common/rpc.py", line 43, in dispatch
    quantum_ctxt, version, method, **kwargs)
  File "/home/soulxu/work-code/openstack/quantum/quantum/openstack/common/rpc/dispatcher.py", line 133, in dispatch
    return getattr(proxyobj, method)(ctxt, **kwargs)
  File "/home/soulxu/work-code/openstack/quantum/quantum/db/agents_db.py", line 167, in report_state
    time = timeutils.parse_strtime(time)
  File "/home/soulxu/work-code/openstack/quantum/quantum/openstack/common/timeutils.py", line 65, in parse_strtime
    return datetime.datetime.strptime(timestr, fmt)
TypeError: must be string, not timestamp

It because we pass timestamp as datetime object, but kombu and qpid backend will deserialize the datetime object as different way.