Updated Secure Sample for new resource discovery response

Updated Secure Sample for new resource discovery response

Resource Discovery response was udpated to be compliance with
OIC Specification. This change is to correctly parse the
discovery response.

Change-Id: I3c16f0ed827f5f993def01e7741c592b1ad1926b
Signed-off-by: Sachin Agrawal <sachin.agrawal@intel.com>
Reviewed-on: https://gerrit.iotivity.org/gerrit/1614
Tested-by: jenkins-iotivity <jenkins-iotivity@opendaylight.org>
Reviewed-by: Mandeep Shetty <mandeep.shetty@intel.com>
Reviewed-by: Sakthivel Samidurai <sakthivel.samidurai@intel.com>