Bug Fix - the Object Array Value in the Palyload was not cloned properly.

Bug Fix - the Object Array Value in the Palyload was not cloned properly.

- Object type (String) value was not checked
- Modification : add the case handling for OCREP_PROP_OBJECT

Change-Id: I8fe9c1fc7fec43648d2127284169af225a6a2bb0
Signed-off-by: Jay Oh <junghyun.oh@samsung.com>
Reviewed-on: https://gerrit.iotivity.org/gerrit/7475
Tested-by: jenkins-iotivity <jenkins-iotivity@opendaylight.org>
Reviewed-by: Jon A. Cruz <jon@joncruz.org>
(cherry picked from commit c53351f54d4e619dcdef8e703c586e2fcea65c9e)
Reviewed-on: https://gerrit.iotivity.org/gerrit/7555
Reviewed-by: Uze Choi <uzchoi@samsung.com>