[feature] Adapt mosaic test to new s2p.main() API, and use the skip_existing option to save time
[feature] Adapt mosaic test to new s2p.main() API, and use the skip_existing option to save time

dyoussef/s2p,carlodef/s2p,MISS3D/s2p,mnhrdt/s2p,dyoussef/s2p,jmichel-otb/s2p,dyoussef/s2p,jmichel-otb/s2p,carlodef/s2p,mnhrdt/s2p,MISS3D/s2p,MISS3D/s2p,jmichel-otb/s2p,jmichel-otb/s2p,dyoussef/s2p,MISS3D/s2p