KAFKA-17408: Fix flaky testShouldCountClicksPerRegionWithNamedRepartitionTopic

[m1a2st]

Jira: https://issues.apache.org/jira/browse/KAFKA-17408

When I ran this test case in my local machine, I found the error is

org.apache.zookeeper.ClientCnxn$SessionTimeoutException: Client session timed out, have not heard from server in 9384ms for session id 0x10010be31470000
	at org.apache.zookeeper.ClientCnxn$SendThread.run(ClientCnxn.java:1257)

In the Jenkis enviroment, the test result message show that get the empty records, thus I guess it is match in this scenerio

org.opentest4j.AssertionFailedError: Condition not met within timeout 60000. Did not receive all [KeyValue(americas, 101), KeyValue(europe, 109), KeyValue(asia, 124)] records from topic output-topic (got [])

I consider that add the session.timeout.ms can fix this flaky

• [ ] Verify design and implementation
• [ ] Verify test coverage and CI build status
• [ ] Verify documentation (including upgrade notes)