Replication queue not enabled properly in Infinispan subsystem

I recently ran our testsuite for EDG and found out that the replication queue is not enabled anywhere.

This probably has to do with latest configuration changes in ISPN:
CacheAdd class in ISPN subsystem calls builder.clustering().async().replQueueMaxElements(...) and builder.clustering().async().replQueueMaxElements(...) but does not call builder.clustering().async().useReplQueue(true) to really enable the replication queue.

Failed test in Jenkins: https://hudson.qa.jboss.com/hudson/view/EDG6/view/EDG-QE/job/edg-60-functional-tests-ispn-arq/lastCompletedBuild/testReport/org.jboss.test.datagrid.configuration/ClusteredCacheConfigurationTest/testQueueSize/

Test class location: https://svn.devel.redhat.com/repos/jboss-qa/edg/edg-functional-tests/trunk/xml-configuration/clustered-cache/src/test/java/org/jboss/test/datagrid/configuration/ClusteredCacheConfigurationTest.java