Finish clust -> clustering rename (and keep compatibility with -Dts.clust)

Conflicts:
	testsuite/integration/clustering/pom.xml
	testsuite/pom.xml
Use builder, not deprecated constructor
WFLY-1077 JdkORB subsystem
Change openjdk-orb version to 8.0.0.Beta1-SNAPSHOT
Switch to wildfly-core 1.0.0.Alpha5-SNAPSHOT