JBIDE-13709 Comment out esb test in category.xml

Esb test requires zest that is not included in the TP.
It is included in JBTIS TP, but we don't need soa tests in master
so I'm choosing this approach right now.
Change target java facet on cdi test project
Set compiler level version on 1.6 so there will be no problem when using
Java 1.6 nor 1.7.
Create two scenarios for external changes testing
Update parent pom reference to version 4.1.0.Alpha2-SNAPSHOT

Update to the latest version. We had 4.1.0.Alpha1-SNAPSHOT which
recently stopped working because it points to now non-existent
TP 4.30.5.Alpha-SNAPSHOT. We should be using parent
4.1.0.Alpha2-SNAPSHOT until 4.1.0.Alpha2 is released and then
we'll move to that.