Updated C++ SDK for discovering secure resources

Updated C++ SDK for discovering secure resources

On discovering secure resources, OCResource object needs to be
updated with 'secure' flag and appropriate port for secure resource.

Change-Id: I0a09ae1e6d9bcc73b7d97b9dcaae02955d63cb2d
Signed-off-by: Sachin Agrawal <sachin.agrawal@intel.com>
Reviewed-on: https://gerrit.iotivity.org/gerrit/1545
Tested-by: jenkins-iotivity <jenkins-iotivity@opendaylight.org>
Reviewed-by: sandeep sharma <sandeep.s9@samsung.com>
Reviewed-by: Woochul Shim <woochul.shim@samsung.com>
Reviewed-by: Erich Keane <erich.keane@intel.com>