ISPN-1951 Use MERGE3 in the default UDP configuration
ISPN-4570 Remove UFC from JGroups TCP configurations
ISPN-3937 Investigate the memory usage of JDBC cache stores when processing a large result set

* Set the result type to TYPE_FORWARD_ONLY and the concurrency to CONCUR_READ_ONLY
* For the particular case of MySQL, setting the fetchSite to MIN_VALUE will fetch
a single row at the time
ISPN-4524 ClusteredCacheWithAsyncDirTest.testCombinationOfFilters random failures
ISPN-4502 Fix test faillures due to resolving 127.0.0.1 to localhost.localdomain
ISPN-3938 AdvancedAsyncCacheLoader.process() concurrency issues

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