Fail to get assignment-params when error occur

Exception is always thrown due to the contract, enforcing
the get attribute to throw an exception if not found.
For the resource resolution result, we can simply initialize
the property to an empty json, so system won't throw an exception
if user request the output, but process failed.

Change-Id: I39e288590502c75495e2938a44b874dfd0671155
Issue-ID: CCSDK-1495
Signed-off-by: Alexis de Talhouët <adetalhouet89@gmail.com>
2 files changed