TestReverseDnsExpertBot.test_invalid_ptr fails because of DNS entry change

[wagner-intevation]

_________________________________________________________________________________________________ TestReverseDnsExpertBot.test_invalid_ptr __________________________________________________________________________________________________

self = <intelmq.tests.bots.experts.reverse_dns.test_expert.TestReverseDnsExpertBot testMethod=test_invalid_ptr>

    def test_invalid_ptr(self):
        self.input_message = INVALID_PTR_INP
        self.run_bot()
>       self.assertMessageEqual(0, INVALID_PTR_OUT)

intelmq/tests/bots/experts/reverse_dns/test_expert.py:88: 
_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _
intelmq/lib/test.py:563: in assertMessageEqual
    self.assertDictEqual(expected, event_dict)
E   AssertionError: {'__type': 'Event', 'source.ip': '31.210.115.39'} != {'source.ip': '31.210.115.39', 'source.reve[47 chars]ent'}
E   - {'__type': 'Event', 'source.ip': '31.210.115.39'}
E   + {'__type': 'Event',
E   +  'source.ip': '31.210.115.39',
E   +  'source.reverse_dns': 'show.generoustek.com'}

Finding a replacement IP address is probably very hard, so the only choice we have is to remove the test or to mock the DNS query.