tst: added test for mapnode multiple json failure
tst: added test for mapnode multiple json failure

rameshvs/nipype,JohnGriffiths/nipype,FCP-INDI/nipype,dgellis90/nipype,wanderine/nipype,carlohamalainen/nipype,dmordom/nipype,glatard/nipype,fprados/nipype,dgellis90/nipype,mick-d/nipype,glatard/nipype,blakedewey/nipype,fprados/nipype,mick-d/nipype_source,iglpdc/nipype,FredLoney/nipype,grlee77/nipype,carolFrohlich/nipype,pearsonlab/nipype,blakedewey/nipype,dmordom/nipype,iglpdc/nipype,FCP-INDI/nipype,mick-d/nipype,JohnGriffiths/nipype,FredLoney/nipype,iglpdc/nipype,arokem/nipype,sgiavasis/nipype,sgiavasis/nipype,carolFrohlich/nipype,FCP-INDI/nipype,JohnGriffiths/nipype,grlee77/nipype,arokem/nipype,Leoniela/nipype,FredLoney/nipype,grlee77/nipype,carlohamalainen/nipype,arokem/nipype,carolFrohlich/nipype,glatard/nipype,pearsonlab/nipype,arokem/nipype,sgiavasis/nipype,Leoniela/nipype,mick-d/nipype,dgellis90/nipype,iglpdc/nipype,pearsonlab/nipype,JohnGriffiths/nipype,wanderine/nipype,grlee77/nipype,mick-d/nipype_source,rameshvs/nipype,gerddie/nipype,gerddie/nipype,sgiavasis/nipype,fprados/nipype,mick-d/nipype,pearsonlab/nipype,Leoniela/nipype,blakedewey/nipype,mick-d/nipype_source,carlohamalainen/nipype,FCP-INDI/nipype,rameshvs/nipype,carolFrohlich/nipype,gerddie/nipype,wanderine/nipype,glatard/nipype,gerddie/nipype,dgellis90/nipype,blakedewey/nipype,dmordom/nipype,rameshvs/nipype,wanderine/nipype