[WLFY-509] JMS 2.0 API support

* update maven GAV for JMS API to:

  org.jboss.spec.javax.jms:jboss-jms-api_2.0_spec:1.0.0.Alpha1

* exclude the JMS 1.1 spec artifact from
  org.jboss.ws.cxf:jbossws-cxf-server dependencies

* exclude temporarily the JMS 1.1 spec artifact from
  org.hornetq:hornetq-jms-server and org.hornetq:hornetq-jms-client
  depedencies until HornetQ supports JMS 2.0
delete manualmode's jbossas-messaging-failover before copy

HornetQ failover is depending on the file system to lock a file.
I have seen PRs be aborted because HornetQ live server can not lock this
file to start (there is no timeout on this lock operation).
Deleting the directory ensures that the file system's lock (from previous
runs) is removed.