[FOR REVIEW ONLY] ISPN-2772 


* ATT: 5 tests still fail!

* Limitation: For REPL test we still use only one segment for now

* Some core tests are converted to new config style to be able to override numSegments to 1.

* Some REPL related interceptors are unused but are not removed

JIRA: https://issues.jboss.org/browse/ISPN-2772