Allow direct import of HdfsFlagTarget from luigi.contrib.hdfs (#2594)
Allow direct import of HdfsFlagTarget from luigi.contrib.hdfs (#2594)


jamesmcm/luigi,adaitche/luigi,riga/luigi,Magnetic/luigi,spotify/luigi,PeteW/luigi,jamesmcm/luigi,PeteW/luigi,spotify/luigi,spotify/luigi,Magnetic/luigi,rayrrr/luigi,dlstadther/luigi,rayrrr/luigi,soxofaan/luigi,rayrrr/luigi,PeteW/luigi,riga/luigi,soxofaan/luigi,soxofaan/luigi,adaitche/luigi,rayrrr/luigi,PeteW/luigi,jamesmcm/luigi,adaitche/luigi,adaitche/luigi,soxofaan/luigi,dlstadther/luigi,Magnetic/luigi,riga/luigi,dlstadther/luigi,dlstadther/luigi,Magnetic/luigi,riga/luigi,spotify/luigi,jamesmcm/luigi