[IS] Sync simulator with changes in cJSON.

[IS] Sync simulator with changes in cJSON.

Some changes in cJSON external library affected the Simulator's
JSON Schema Parser. Due to this, resource creation was failed.
This code check-in handles those cJSON changes in simulator.

Change-Id: I11173b39c61651c1459cb45b5e5cf886dafbabdd
Signed-off-by: Senthil Kumar G S <senthil.gs@samsung.com>
Reviewed-on: https://gerrit.iotivity.org/gerrit/15369
Reviewed-by: Harish Marappa <h.marappa@samsung.com>
Tested-by: jenkins-iotivity <jenkins-iotivity@opendaylight.org>
Reviewed-by: Uze Choi <uzchoi@samsung.com>
(cherry picked from commit c29d63038da023bce2de1b95c073fe9b181f6c9d)
Reviewed-on: https://gerrit.iotivity.org/gerrit/15453