build: Support SECURED mode in resource-directory test

build: Support SECURED mode in resource-directory test

Bug: https://jira.iotivity.org/browse/IOT-1428
Change-Id: Ib924adced10d24d5d7afc8b6964bf560dae60b5a
Signed-off-by: Philippe Coval <philippe.coval@osg.samsung.com>
Reviewed-on: https://gerrit.iotivity.org/gerrit/16411
Tested-by: jenkins-iotivity <jenkins@iotivity.org>
Reviewed-by: George Nash <george.nash@intel.com>
Reviewed-by: Dave Thaler <dthaler@microsoft.com>
Reviewed-by: Mats Wichmann <mats@linux.com>
Reviewed-by: Dan Mihai <Daniel.Mihai@microsoft.com>