adding training tasks into "modelTraining" gradle task group
adding training tasks into "modelTraining" gradle task group


Former-commit-id: 7b4fa8774880e31e9afafd443408b9076babb91b
kermitt2/grobid,kermitt2/grobid,kermitt2/grobid,kermitt2/grobid,kermitt2/grobid,kermitt2/grobid