ISPN-4634 AS module for JCache is importing the wrong slot for JGroups
ISPN-4557 Remove LevelDB temporary files on 'mvn clean'
ISPN-4557 Fix JBoss modules structure to allow Embedded Query usage in deployed applications
ISPN-4557 Run Arquillian tests on multiple WildFly nodes
ISPN-4557 Run Query tests in clustered mode to test the as modules for embedded mode
ISPN-3938 AdvancedAsyncCacheLoader.process() concurrency issues

Simplify ExecutorAllCompletionService to track the tasks itself instead of
using an ExecutorCompletionService.