DAL JPA Layer, REST module rename, Jacoco report

Added the DAL organizing unit tests and integration tests as
@pkainulainen/maven-examples
Renamed the two modules of the REST service in
- cxfatwork-rs-j2ee-rest-api
- cxfatwork-rs-j2ee-rest-impl-jaxrs
and added organization for integration test and unit test and coverage
report with Jacoco