Fix TestZkLocalApplicationRunner tests

Here are the failures from the jenkins build

shouldStopNewProcessorsJoiningGroupWhenNumContainersIsGreaterThanNumTasks FAILED
java.lang.Exception: test timed out after 120000 milliseconds
at sun.misc.Unsafe.park(Native Method)
at java.util.concurrent.locks.LockSupport.park(LockSupport.java:175)
at java.util.concurrent.locks.AbstractQueuedSynchronizer.parkAndCheckInterrupt(AbstractQueuedSynchronizer.java:836)
at java.util.concurrent.locks.AbstractQueuedSynchronizer.doAcquireSharedInterruptibly(AbstractQueuedSynchronizer.java:997)
at java.util.concurrent.locks.AbstractQueuedSynchronizer.acquireSharedInterruptibly(AbstractQueuedSynchronizer.java:1304)
at java.util.concurrent.CountDownLatch.await(CountDownLatch.java:231)
at org.apache.samza.test.processor.TestZkLocalApplicationRunner.shouldStopNewProcessorsJoiningGroupWhenNumContainersIsGreaterThanNumTasks(TestZkLocalApplicationRunner.java:258)

shouldReElectLeaderWhenLeaderDies FAILED
org.junit.ComparisonFailure: expected:<[2]> but was:<[1]>
at org.junit.Assert.assertEquals(Assert.java:123)
at org.junit.Assert.assertEquals(Assert.java:145)
at org.apache.samza.test.processor.TestZkLocalApplicationRunner.shouldReElectLeaderWhenLeaderDies(TestZkLocalApplicationRunner.java:320)

shouldStopNewProcessorsJoiningGroupWhenNumContainersIsGreaterThanNumTasks FAILED
java.lang.Exception: test timed out after 120000 milliseconds
at sun.misc.Unsafe.park(Native Method)
at java.util.concurrent.locks.LockSupport.park(LockSupport.java:175)
at java.util.concurrent.locks.AbstractQueuedSynchronizer.parkAndCheckInterrupt(AbstractQueuedSynchronizer.java:836)
at java.util.concurrent.locks.AbstractQueuedSynchronizer.doAcquireSharedInterruptibly(AbstractQueuedSynchronizer.java:997)
at java.util.concurrent.locks.AbstractQueuedSynchronizer.acquireSharedInterruptibly(AbstractQueuedSynchronizer.java:1304)
at java.util.concurrent.CountDownLatch.await(CountDownLatch.java:231)
at org.apache.samza.test.processor.TestZkLocalApplicationRunner.shouldStopNewProcessorsJoiningGroupWhenNumContainersIsGreaterThanNumTasks(TestZkLocalApplicationRunner.java:258)