Only when a port is running TLS only can it be identified early as encrypted (those running both PLAIN/TLS have to wait for the sniff)

git-svn-id: https://svn.apache.org/repos/asf/qpid/branches/QPID-6262-JavaBrokerNIO@1644644 13f79535-47bb-0310-9956-ffa450edef68