DEV  :Changed batch processing for new sct_get_centerline
DEV  :Changed batch processing for new sct_get_centerline


Former-commit-id: a3fa5c896b60c49751ce12cf3d76592a7cc1a90e [formerly 2a54fe878d58c0d01e94e06fac83e810c10ddcee]
Former-commit-id: bab69705775694b2ebbf26c7a19e5088f437bd03
Former-commit-id: d9a8db958fe44d325ffdb7772bea87b9354b637b
neuropoly/spinalcordtoolbox,neuropoly/spinalcordtoolbox,neuropoly/spinalcordtoolbox,neuropoly/spinalcordtoolbox,neuropoly/spinalcordtoolbox,neuropoly/spinalcordtoolbox,neuropoly/spinalcordtoolbox