OPT: new Param class taked into account in test_debug
OPT: new Param class taked into account in test_debug

Former-commit-id: 11ac0a2dc2be4b54568aa693f59e76294449ecb2
Former-commit-id: 6cb0313ff12a3ccef9bf825a414d9c1bfa010928
3324fr/spinalcordtoolbox,3324fr/spinalcordtoolbox,3324fr/spinalcordtoolbox,3324fr/spinalcordtoolbox,3324fr/spinalcordtoolbox,3324fr/spinalcordtoolbox,3324fr/spinalcordtoolbox