ISPN-4675 and ISPN-4828

https://issues.jboss.org/browse/ISPN-4675
https://issues.jboss.org/browse/ISPN-4828

ISPN-4675 Missing server configuration for remote executor thread pool …
Add server configuration for the remote command executor and the total order executor.

ISPN-4828 Increasing default internal thread pool size …
* Use the JGroups defaults for the internal thread pool (core = 2, max = 4)
* Increase the max size of the remote executor thread pool to 200 (core = 1)