moved active_trail_nodes test
moved active_trail_nodes test

khalibartan/pgmpy,khalibartan/pgmpy,pgmpy/pgmpy,abinashpanda/pgmpy,pgmpy/pgmpy,sandeepkrjha/pgmpy,liquidmetal/pgmpy,ankurankan/pgmpy,sandeepkrjha/pgmpy,jhonatanoliveira/pgmpy,anaviltripathi/pgmpy,abinashpanda/pgmpy,jhonatanoliveira/pgmpy,liquidmetal/pgmpy,anaviltripathi/pgmpy,ankurankan/pgmpy,kris-singh/pgmpy,kris-singh/pgmpy