SVC payload conversion from JSON to CBOR

SVC payload conversion from JSON to CBOR

Converts SVC payload conversion from JSON to CBOR directly using tinycbor library.

- SVC unit test is updated to match new changes.
- Persistant storage format: { "acl": <aclcbor>, "svc": <svccbor> }

Change-Id: I1a5b5600260b8965e468844636f6d77274688d29
Signed-off-by: Habib Virji <habib.virji@samsung.com>
Reviewed-on: https://gerrit.iotivity.org/gerrit/5047
Tested-by: jenkins-iotivity <jenkins-iotivity@opendaylight.org>
Reviewed-by: Randeep Singh <randeep.s@samsung.com>
Reviewed-on: https://gerrit.iotivity.org/gerrit/5771