Default Thread Pool Size

The thread pool thread-pool-1 starts with a minimum size of 2 instead of 1 (like in previous versions)

This includes the benefit of allowing users to execute tasks concurrently using the ManagedExecutorService and ManagedScheduledExecutorService components included with Java EE Concurrency Utilities (JSR-236).

Without this change, new tasks submitted to these service components would just have been queued in a linear fashion.