build: use tools.scons.RunTest for csdk security tests

build: use tools.scons.RunTest for csdk security tests

To avoid race conditions.

Bug: https://jira.iotivity.org/browse/IOT-1526
Change-Id: I1c525d58b7c220dd8043b65bf873e0d1d294a020
Signed-off-by: Philippe Coval <philippe.coval@osg.samsung.com>
Reviewed-on: https://gerrit.iotivity.org/gerrit/14915
Tested-by: jenkins-iotivity <jenkins-iotivity@opendaylight.org>
Reviewed-by: Ziran Sun <ziran.sun@samsung.com>
Reviewed-by: George Nash <george.nash@intel.com>
(cherry picked from commit 162ce85af58df04c539b33e63a33d672eeb5317e)
Reviewed-on: https://gerrit.iotivity.org/gerrit/15103