[SSM] Fix issues about initializing SSM

[SSM] Fix issues about initializing SSM

1. modify to return error code when xml parsing error occurs
2. apply new SSM Interface
3. modify sample apps according to the new interface design
4. modify ResourceFinder to stop checking presence when SSM terminates

Change-Id: Id5cd6aade44fe531cb547400d15bb343ba28655a
Signed-off-by: Minji Park <minjii.park@samsung.com>
(cherry picked from commit 755906466e380ef87011385b89af29004e616bb0)
Reviewed-on: https://gerrit.iotivity.org/gerrit/207
Tested-by: jenkins-iotivity <jenkins-iotivity@opendaylight.org>
Reviewed-by: Sudarshan Prasad <sudarshan.prasad@intel.com>