Intermittent test failure in test_describe_configs_topic_resource_returns_configs

[jeffwidman]

Noticed that two test runs failed on one of the travis builds:

• https://travis-ci.org/dpkp/kafka-python/jobs/596753723
• https://travis-ci.org/dpkp/kafka-python/jobs/596753725

topic = 'test_describe_configs_topic_resource_returns_configs_nXpHTvKOpm'
kafka_admin_client = <kafka.admin.client.KafkaAdminClient object at 0x7f47e3367250>
    @pytest.mark.skipif(env_kafka_version() < (0, 11), reason="Describe config features require broker >=0.11")
    def test_describe_configs_topic_resource_returns_configs(topic, kafka_admin_client):
        """Tests that describe config returns configs for topic
        """
        configs = kafka_admin_client.describe_configs([ConfigResource(ConfigResourceType.TOPIC, topic)])
    
        assert len(configs) == 1
        assert configs[0].resources[0][2] == ConfigResourceType.TOPIC
        assert configs[0].resources[0][3] == topic
>       assert len(configs[0].resources[0][4]) > 1
E       assert 0 > 1
E        +  where 0 = len([])
test/test_admin_integration.py:108: AssertionError

I suspect (but have not verified) that this is a race condition where the topic or config resource is in the midst of being created, but simply hasn't completed by the time it's checked.

[dpkp]

Let's skip this test until we have a solution. I've also seen several of these. (I've marked it as xfail for now)