[IOT-1366] coaps request for secure resource

[IOT-1366] coaps request for secure resource

[Randeep Singh]

[IOT-1366] coaps request for secure resource

handled pending review comments

[Philippe Coval]

Ported from 1.2-rel to master

  Conflicts:
	resource/csdk/security/src/secureresourcemanager.c

Change-Id: Iacde7395b7a5da53caff7f175beb3d3e17dd9894
Signed-off-by: Randeep Singh <randeep.s@samsung.com>
Reviewed-on: https://gerrit.iotivity.org/gerrit/12907
Tested-by: jenkins-iotivity <jenkins-iotivity@opendaylight.org>
Reviewed-by: Ashwini  Kumar <k.ashwini@samsung.com>
Author: Randeep Singh <randeep.s@samsung.com>
Signed-off-by: Philippe Coval <philippe.coval@osg.samsung.com>
Reviewed-on: https://gerrit.iotivity.org/gerrit/16883
Tested-by: jenkins-iotivity <jenkins@iotivity.org>
Reviewed-by: Alex Kelley <alexke@microsoft.com>
Reviewed-by: Kevin Kane <kkane@microsoft.com>