utils: print shutil operations using printv code style
utils: print shutil operations using printv code style

Former-commit-id: b175ad01164882f21ece3bdc8945394450d0dd5d
neuropoly/spinalcordtoolbox,neuropoly/spinalcordtoolbox,neuropoly/spinalcordtoolbox,neuropoly/spinalcordtoolbox,neuropoly/spinalcordtoolbox,neuropoly/spinalcordtoolbox,neuropoly/spinalcordtoolbox