Changed the parser in sct_make_ground_truth.
Changed the parser in sct_make_ground_truth.


Former-commit-id: edd6420a9e9403ee044143199a1f6dbc9c4a4f12
neuropoly/spinalcordtoolbox,neuropoly/spinalcordtoolbox,neuropoly/spinalcordtoolbox,neuropoly/spinalcordtoolbox,neuropoly/spinalcordtoolbox,neuropoly/spinalcordtoolbox,neuropoly/spinalcordtoolbox