Intermittent test failure SimpleProducerConsumerTest.testUnackBlockRedeliverMessages

[merlimat]

Seen it failing a few times with:

testUnackBlockRedeliverMessages(com.yahoo.pulsar.client.api.SimpleProducerConsumerTest)  Time elapsed: 3.166 sec  <<< FAILURE!
java.lang.AssertionError: expected [20] but found [112]
    at com.yahoo.pulsar.client.api.SimpleProducerConsumerTest.testUnackBlockRedeliverMessages(SimpleProducerConsumerTest.java:1301)

[rdhabalia]

As we had seen earlier in #5 : this test-case was keep failing because travis was picking up wrong commit. Closing this issue for now as we haven't seen this failure after that.