Destroy Secure resources during system shut-down

Destroy Secure resources during system shut-down

Secure resources which were recently added were not being
destroyed during system shutdown. Added API calls to enable
proper de-allocation.

Change-Id: I1fcaf2218d8957138a87e1ffab14d07c78bebe5c
Signed-off-by: Sachin Agrawal <sachin.agrawal@intel.com>
Reviewed-on: https://gerrit.iotivity.org/gerrit/2955
Tested-by: jenkins-iotivity <jenkins-iotivity@opendaylight.org>
Reviewed-by: Shilpa Sodani <shilpa.a.sodani@intel.com>
Reviewed-by: Dmitriy Zhuravlev <d.zhuravlev@samsung.com>