Spurious failure in test_get_hostname_ip_mapping_returns_fqdn_and_other

[Gavin Panella]

Seen when landing a branch to lp:maas/2.0:

FAIL: maasserver.models.tests.test_staticipaddress.TestStaticIPAddressManagerMapping.test_get_hostname_ip_mapping_returns_fqdn_and_other
----------------------------------------------------------------------
testtools.testresult.real._StringException: Traceback (most recent call last):
  File "/tmp/tarmac/branch.nsyM9g/src/maastesting/runtest.py", line 135, in _run_user
    result = function(*args, **kwargs)
  File "/home/ubuntu/.buildout/eggs/testtools-2.1.0-py3.5.egg/testtools/testcase.py", line 714, in _run_test_method
    return self._get_test_method()()
  File "/tmp/tarmac/branch.nsyM9g/src/maasserver/models/tests/test_staticipaddress.py", line 408, in test_get_hostname_ip_mapping_returns_fqdn_and_other
    }, mapping)
  File "/home/ubuntu/.buildout/eggs/testtools-2.1.0-py3.5.egg/testtools/testcase.py", line 406, in assertEqual
    self.assertThat(observed, matcher, message)
  File "/home/ubuntu/.buildout/eggs/testtools-2.1.0-py3.5.egg/testtools/testcase.py", line 493, in assertThat
    raise mismatch_error
testtools.matchers._impl.MismatchError: !=:
reference = {'eth-h5Nh8S.hostname-xAUGgm.domain-vZIpct': HostnameIPMapping('4y3h7n', 30, {'60.174.134.104'}, 0),
 'hostname-xAUGgm.domain-vZIpct': HostnameIPMapping('4y3h7n', 30, {'60.174.134.107'}, 0)}
actual = defaultdict(<class 'maasserver.models.staticipaddress.HostnameIPMapping'>,
            {'eth-h5Nh8S.hostname-xAUGgm.domain-vZIpct': HostnameIPMapping('4y3h7n', 30, {'60.174.134.107'}, 0),
             'hostname-xAUGgm.domain-vZIpct': HostnameIPMapping('4y3h7n', 30, {'60.174.134.104'}, 0)})

[LaMont Jones (lamont)]

in 125 iterations, 12 failures.

[Andres Rodriguez (andreserl)]

Hi!

**This is an automated message**

We believe this is may no longer be an issue in the latest MAAS release. Due to the report date of this, we are currently marking it as Invalid. If you believe this bug report still valid against the latest release of MAAS, or if you are still interested in this, please re-open this bug report.

Thanks