ISPN-4410 + ISPN-4411 Server configuration and testsuite fixes

https://issues.jboss.org/browse/ISPN-4410
https://issues.jboss.org/browse/ISPN-4411
The jgroups-defaults.xml file acts as a template for protocols. Basically the list of protocols that matters is what is in standalone.xml. For each protocol in there, the defaults are taken from jgroups-defaults.xml.