The "initialize" phase for the "reserve-network-port" goal was too aggressive: it trigged network port reservation
even for simple tasks like "compile" or "javadoc". Use "pre-integration-test" phase instead. One possible issue is
that the "start-jetty" task also uses the "pre-integration-test" phase but need to be executed only after the port
reservation. A quick test suggested that tasks in the same phase are executed in declaration order. We hope that
this assumption is stable.


git-svn-id: https://svn.apache.org/repos/asf/sis/branches/JDK8@1588352 13f79535-47bb-0310-9956-ffa450edef68