Fix the value of ML_TENSOR_RANK_LIMIT

Fix the value of ML_TENSOR_RANK_LIMIT

To support the higher rank of the ML model, the ML_TENSOR_RANK_LIMIT
of the ML API was changed from 4 to 16. However, the webapi-plugins
assume that ML_TENSOR_RANK_LIMIT is 4 and it causes the build break issue.
This patch fixes this issue and update related test cases.

Change-Id: I05ab7fa0a5ba28476f38170d9f9c4e7396d35981
Signed-off-by: Sangjung Woo <sangjung.woo@samsung.com>
Signed-off-by: Piotr Kosko/Tizen API (PLT) /SRPOL/Engineer/Samsung Electronics <p.kosko@samsung.com>