Code review comment for lp:~ntt-pf-lab/nova/ipv6-support

I'm getting a number of failures when I run the test suite.

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ERROR: test_associate_disassociate_address (nova.tests.test_cloud.CloudTestCase)
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Traceback (most recent call last):
  File "/home/soren/src/openstack/nova/nova/nova/tests/test_cloud.py", line 112, in test_associate_disassociate_address
    public_ip=address)
  File "/home/soren/src/openstack/nova/nova/nova/api/ec2/cloud.py", line 758, in associate_address
    self.compute_api.associate_floating_ip(context, instance_id, public_ip)
  File "/home/soren/src/openstack/nova/nova/nova/compute/api.py", line 501, in associate_floating_ip
    instance['fixed_ip'])
  File "/home/soren/src/openstack/nova/nova/nova/network/api.py", line 70, in associate_floating_ip
    host = fixed_ip['network']['host']
  File "/home/soren/src/openstack/nova/nova/nova/db/sqlalchemy/models.py", line 74, in __getitem__
    return getattr(self, key)
  File "/usr/lib/python2.6/dist-packages/sqlalchemy/orm/attributes.py", line 163, in __get__
    instance_dict(instance))
  File "/usr/lib/python2.6/dist-packages/sqlalchemy/orm/attributes.py", line 382, in get
    value = callable_(passive=passive)
  File "/usr/lib/python2.6/dist-packages/sqlalchemy/orm/strategies.py", line 578, in __call__
    (mapperutil.state_str(state), self.key)
DetachedInstanceError: Parent instance <FixedIp at 0x5a13e90> is not bound to a Session; lazy load operation of attribute 'network' cannot proceed

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ERROR: test_private_ipv6 (nova.tests.test_network.NetworkTestCase)
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Traceback (most recent call last):
  File "/home/soren/src/openstack/nova/nova/nova/tests/test_network.py", line 108, in test_private_ipv6
    instance_ref['id'])
  File "/home/soren/src/openstack/nova/nova/nova/db/api.py", line 361, in instance_get_fixed_address_v6
    return IMPL.instance_get_fixed_address_v6(context, instance_id)
  File "/home/soren/src/openstack/nova/nova/nova/db/sqlalchemy/api.py", line 107, in wrapper
    return f(*args, **kwargs)
  File "/home/soren/src/openstack/nova/nova/nova/db/sqlalchemy/api.py", line 810, in instance_get_fixed_address_v6
    network_ref = network_get_by_instance(context, instance_id)
  File "/home/soren/src/openstack/nova/nova/nova/db/sqlalchemy/api.py", line 95, in wrapper
    raise exception.NotAuthorized()
NotAuthorized: None

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ERROR: test_static_filters (nova.tests.test_virt.IptablesFirewallTestCase)
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Traceback (most recent call last):
  File "/home/soren/src/openstack/nova/nova/nova/tests/test_virt.py", line 306, in test_static_filters
    out_rules = self.fw.modify_rules(self.in_rules)
TypeError: modify_rules() takes exactly 3 arguments (2 given)

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FAIL: test_describe_instances (nova.tests.test_cloud.CloudTestCase)
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Traceback (most recent call last):
  File "/home/soren/src/openstack/nova/nova/nova/tests/test_cloud.py", line 282, in test_describe_instances
    ['placement']['availabilityZone'], 'zone1')
AssertionError: u'nova' != 'zone1'

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FAIL: test_instance_update_state (nova.tests.test_cloud.CloudTestCase)
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Traceback (most recent call last):
  File "/home/soren/src/openstack/nova/nova/nova/tests/test_cloud.py", line 305, in test_instance_update_state
    self.assert_(len(rv['reservationSet']) == 0)
AssertionError

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FAIL: test_run_terminate (nova.tests.test_compute.ComputeTestCase)
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Traceback (most recent call last):
  File "/home/soren/src/openstack/nova/nova/nova/tests/test_compute.py", line 105, in test_run_terminate
    self.assertEqual(len(instances), 1)
AssertionError: 3 != 1

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FAIL: test_authors_up_to_date (nova.tests.test_misc.ProjectTestCase)
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Traceback (most recent call last):
  File "/home/soren/src/openstack/nova/nova/nova/tests/test_misc.py", line 53, in test_authors_up_to_date
    '%r not listed in Authors' % missing)
AssertionError: set([u'<email address hidden>', u'<nova@u4>', u'<email address hidden>', u'<email address hidden>', u'<email address hidden>']) not listed in Authors

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FAIL: test_doesnt_report_disabled_hosts_as_up (nova.tests.test_scheduler.SimpleDriverTestCase)
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Traceback (most recent call last):
  File "/home/soren/src/openstack/nova/nova/nova/tests/test_scheduler.py", line 196, in test_doesnt_report_disabled_hosts_as_up
    self.assertEqual(0, len(hosts))
AssertionError: 0 != 1

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FAIL: test_reports_enabled_hosts_as_up (nova.tests.test_scheduler.SimpleDriverTestCase)
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Traceback (most recent call last):
  File "/home/soren/src/openstack/nova/nova/nova/tests/test_scheduler.py", line 215, in test_reports_enabled_hosts_as_up
    self.assertEqual(2, len(hosts))
AssertionError: 2 != 3

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Ran 277 tests in 88.005s

FAILED (errors=3, failures=6)