[CA] Assigned unicast port number 0 instead of fixed number

[CA] Assigned unicast port number 0 instead of fixed number

Fix for jira issue IOT 379

Change-Id: Iaefe63189473fb106c5a43eb8648fc903ed3954e
Signed-off-by: koushik.girijala <g.koushik@samsung.com>
Reviewed-on: https://gerrit.iotivity.org/gerrit/1338
Reviewed-by: Abhishek Sharma <ce.abhishek@samsung.com>
Tested-by: jenkins-iotivity <jenkins-iotivity@opendaylight.org>
Reviewed-by: John Light <john.j.light@intel.com>
Reviewed-by: Erich Keane <erich.keane@intel.com>