INST: added sudo on requirements installation to allows conda and pip installation in folder where permissions are required
INST: added sudo on requirements installation to allows conda and pip installation in folder where permissions are required

Former-commit-id: f6d6ca2fab14137e19c75de0d67ea4eccca5d61c [formerly abb5f4a0bbd2a8e2864f6027be1ad7c74036efde]
Former-commit-id: 72a72fe32b14a18bd8f406af9ae67b24ef9a8ca8
Former-commit-id: 90237397a4e91149c60cfe68f53885694624f26a
neuropoly/spinalcordtoolbox,neuropoly/spinalcordtoolbox,neuropoly/spinalcordtoolbox,neuropoly/spinalcordtoolbox,neuropoly/spinalcordtoolbox,neuropoly/spinalcordtoolbox,neuropoly/spinalcordtoolbox