since https://issues.apache.org/jira/browse/AMQ-4495 always pulls in maxPageSize messages and allows for exceeding the MemoryLimit we must adjust the test case to account for that.  

git-svn-id: https://svn.apache.org/repos/asf/activemq/trunk@1485383 13f79535-47bb-0310-9956-ffa450edef68