Parameters going into Wait.waitFor were originally wrong, because
`durationMillis: 3, sleepMillis: 100` means you would test the condition
only once. This commit is changing the durationMillis from 3ms to 3s,
swapping the two numbers (duration 100ms, sleep 3ms) would also be reasonable, I think.
Next, Wait.assertEquals is here being used, instead of Assert.assertTrue.
I saw the test fail only once, and never was able to reproduce it again,
but I think this commit does improve the test and so it is worthwhile.
java.lang.AssertionError
at org.apache.activemq.artemis.tests.integration.management.QueueControlTest.assertMetrics(QueueControlTest.java:2651)
at org.apache.activemq.artemis.tests.integration.management.QueueControlTest.assertMessageMetrics(QueueControlTest.java:2615)
at org.apache.activemq.artemis.tests.integration.management.QueueControlTest.testRemoveAllWithPagingMode(QueueControlTest.java:1554)