ISPN-4870 Upgrade to JGroups 3.6.0.Final
ISPN-4913 Add a SKIP_INDEXING flag to HotRod for symmetry with embedded
ISPN-4914 Don't print spurious warning about the isolation attribute on
server startup
ISPN-4911 Add DMR operation for invoking the Mass Indexer
ISPN-4916 Add MassIndexer, XSite State Transfer and Partitioning
ops/attributes to the server RHQ plugin
ISPN-4675 Missing server configuration for remote executor thread pool

Add server configuration for the remote command executor and the total order executor.
ISPN-3938 AdvancedAsyncCacheLoader.process() concurrency issues

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