Flaky test ConsumerBounceTest#testCloseDuringRebalance

https://builds.apache.org/job/kafka-pr-jdk11-scala2.12/5450/consoleFull

 
16:16:10 kafka.api.ConsumerBounceTest > testCloseDuringRebalance STARTED*16:16:22* kafka.api.ConsumerBounceTest.testCloseDuringRebalance failed, log available in /home/jenkins/jenkins-slave/workspace/kafka-pr-jdk11-scala2.12/core/build/reports/testOutput/kafka.api.ConsumerBounceTest.testCloseDuringRebalance.test.stdout*16:16:22* 16:16:22 kafka.api.ConsumerBounceTest > testCloseDuringRebalance FAILED*16:16:22* java.lang.AssertionError: Rebalance did not complete in time*16:16:22* at org.junit.Assert.fail(Assert.java:89)16:16:22 at org.junit.Assert.assertTrue(Assert.java:42)16:16:22 at kafka.api.ConsumerBounceTest.waitForRebalance$1(ConsumerBounceTest.scala:402)16:16:22 at kafka.api.ConsumerBounceTest.checkCloseDuringRebalance(ConsumerBounceTest.scala:416)16:16:22 at kafka.api.ConsumerBounceTest.testCloseDuringRebalance(ConsumerBounceTest.scala:379)