Add attrs for backward ops (#6003)
Add attrs for backward ops (#6003)


ShownX/incubator-mxnet,leezu/mxnet,thirdwing/mxnet,antoan2/incubator-mxnet,leezu/mxnet,yajiedesign/mxnet,fullfanta/mxnet,ForkedReposBak/mxnet,tlby/mxnet,sergeykolychev/mxnet,zhreshold/mxnet,formath/mxnet,luoyetx/mxnet,nicklhy/mxnet,lxn2/mxnet,lxn2/mxnet,eric-haibin-lin/mxnet,rishita/mxnet,nicklhy/mxnet,szha/mxnet,crazy-cat/incubator-mxnet,ykim362/mxnet,DickJC123/mxnet,zhreshold/mxnet,saurabh3949/mxnet,lxn2/mxnet,wangyum/mxnet,solin319/incubator-mxnet,yuruofeifei/mxnet,madjam/mxnet,lxn2/mxnet,EvanzzzZ/mxnet,kevinthesun/mxnet,reminisce/mxnet,jamesliu/mxnet,ykim362/mxnet,tlby/mxnet,rahul003/mxnet,likelyzhao/mxnet,EvanzzzZ/mxnet,DR08/mxnet,likelyzhao/mxnet,kkk669/mxnet,navrasio/mxnet,saurabh3949/mxnet,danithaca/mxnet,ZihengJiang/mxnet,wangyum/mxnet,ShownX/incubator-mxnet,coder-james/mxnet,sergeykolychev/mxnet,yuruofeifei/mxnet,szha/mxnet,hpi-xnor/BMXNet,fullfanta/mxnet,apaleyes/mxnet,jiajiechen/mxnet,Mega-DatA-Lab/mxnet,DR08/mxnet,piiswrong/mxnet,jennyzhang0215/incubator-mxnet,Northrend/mxnet,madjam/mxnet,lxn2/mxnet,szha/mxnet,apache/incubator-mxnet,precedenceguo/mxnet,hotpxl/mxnet,formath/mxnet,sergeykolychev/mxnet,leezu/mxnet,ykim362/mxnet,indhub/mxnet,arank/mxnet,rahul003/mxnet,fullfanta/mxnet,madjam/mxnet,Prasad9/incubator-mxnet,Prasad9/incubator-mxnet,madjam/mxnet,ykim362/mxnet,precedenceguo/mxnet,ykim362/mxnet,yajiedesign/mxnet,jennyzhang0215/incubator-mxnet,Ldpe2G/mxnet,ptrendx/mxnet,arank/mxnet,stefanhenneking/mxnet,sxjscience/mxnet,wangyum/mxnet,jiajiechen/mxnet,arank/mxnet,hpi-xnor/BMXNet,mbaijal/incubator-mxnet,jermainewang/mxnet,rishita/mxnet,Northrend/mxnet,pluskid/mxnet,jennyzhang0215/incubator-mxnet,LinkHS/incubator-mxnet,larroy/mxnet,larroy/mxnet,xcgoner/dist-mxnet,jennyzhang0215/incubator-mxnet,danithaca/mxnet,thirdwing/mxnet,ZihengJiang/mxnet,sergeykolychev/mxnet,tornadomeet/mxnet,Northrend/mxnet,luoyetx/mxnet,madjam/mxnet,leezu/mxnet,larroy/mxnet,madjam/mxnet,ptrendx/mxnet,tlby/mxnet,hpi-xnor/BMXNet,arikpoz/mxnet,precedenceguo/mxnet,tlby/mxnet,wangyum/mxnet,apaleyes/mxnet,hesseltuinhof/mxnet,luoyetx/mxnet,weleen/mxnet,gautamkmr/incubator-mxnet,rishita/mxnet,sergeykolychev/mxnet,luoyetx/mxnet,larroy/mxnet,piiswrong/mxnet,hesseltuinhof/mxnet,jermainewang/mxnet,mbaijal/incubator-mxnet,precedenceguo/mxnet,pluskid/mxnet,piiswrong/mxnet,navrasio/mxnet,pluskid/mxnet,Mega-DatA-Lab/mxnet,stefanhenneking/mxnet,ShownX/incubator-mxnet,kevinthesun/mxnet,tlby/mxnet,dmlc/mxnet,thirdwing/mxnet,szha/mxnet,hotpxl/mxnet,hesseltuinhof/mxnet,larroy/mxnet,saurabh3949/mxnet,jiajiechen/mxnet,weleen/mxnet,ptrendx/mxnet,indhub/mxnet,mbaijal/incubator-mxnet,Ldpe2G/mxnet,saurabh3949/mxnet,weleen/mxnet,Mega-DatA-Lab/mxnet,smolix/incubator-mxnet,navrasio/mxnet,luoyetx/mxnet,crazy-cat/incubator-mxnet,formath/mxnet,EvanzzzZ/mxnet,leezu/mxnet,xcgoner/dist-mxnet,dmlc/mxnet,smolix/incubator-mxnet,jamesliu/mxnet,yuruofeifei/mxnet,ShownX/incubator-mxnet,EvanzzzZ/mxnet,solin319/incubator-mxnet,xcgoner/dist-mxnet,eric-haibin-lin/mxnet,larroy/mxnet,ForkedReposBak/mxnet,reminisce/mxnet,fullfanta/mxnet,rishita/mxnet,Mega-DatA-Lab/mxnet,ykim362/mxnet,jermainewang/mxnet,Prasad9/incubator-mxnet,arikpoz/mxnet,LinkHS/incubator-mxnet,smolix/incubator-mxnet,szha/mxnet,arank/mxnet,thirdwing/mxnet,hotpxl/mxnet,indhub/mxnet,antoan2/incubator-mxnet,luoyetx/mxnet,hpi-xnor/BMXNet,wangyum/mxnet,Prasad9/incubator-mxnet,ZihengJiang/mxnet,arikpoz/mxnet,Ldpe2G/mxnet,yuruofeifei/mxnet,gautamkmr/incubator-mxnet,hesseltuinhof/mxnet,danithaca/mxnet,sergeykolychev/mxnet,likelyzhao/mxnet,DR08/mxnet,CodingCat/mxnet,leezu/mxnet,likelyzhao/mxnet,DR08/mxnet,solin319/incubator-mxnet,apache/incubator-mxnet,tornadomeet/mxnet,rahul003/mxnet,ptrendx/mxnet,CodingCat/mxnet,DR08/mxnet,Mega-DatA-Lab/mxnet,stefanhenneking/mxnet,jermainewang/mxnet,coder-james/mxnet,ptrendx/mxnet,antoan2/incubator-mxnet,yajiedesign/mxnet,eric-haibin-lin/mxnet,eric-haibin-lin/mxnet,jiajiechen/mxnet,weleen/mxnet,yuruofeifei/mxnet,CodingCat/mxnet,indhub/mxnet,pluskid/mxnet,sxjscience/mxnet,szha/mxnet,navrasio/mxnet,mbaijal/incubator-mxnet,vikingMei/mxnet,formath/mxnet,Mega-DatA-Lab/mxnet,dmlc/mxnet,arank/mxnet,antoan2/incubator-mxnet,solin319/incubator-mxnet,formath/mxnet,ZihengJiang/mxnet,danithaca/mxnet,ptrendx/mxnet,Prasad9/incubator-mxnet,jermainewang/mxnet,eric-haibin-lin/mxnet,tornadomeet/mxnet,piiswrong/mxnet,jamesliu/mxnet,apaleyes/mxnet,kevinthesun/mxnet,reminisce/mxnet,Northrend/mxnet,arank/mxnet,tlby/mxnet,EvanzzzZ/mxnet,danithaca/mxnet,LinkHS/incubator-mxnet,indhub/mxnet,weleen/mxnet,smolix/incubator-mxnet,solin319/incubator-mxnet,zhreshold/mxnet,reminisce/mxnet,Ldpe2G/mxnet,ForkedReposBak/mxnet,jermainewang/mxnet,coder-james/mxnet,pluskid/mxnet,EvanzzzZ/mxnet,tornadomeet/mxnet,zhreshold/mxnet,apache/incubator-mxnet,Prasad9/incubator-mxnet,weleen/mxnet,Ldpe2G/mxnet,ShownX/incubator-mxnet,precedenceguo/mxnet,jamesliu/mxnet,kkk669/mxnet,thirdwing/mxnet,gautamkmr/incubator-mxnet,arank/mxnet,reminisce/mxnet,nicklhy/mxnet,antoan2/incubator-mxnet,TuSimple/mxnet,mbaijal/incubator-mxnet,ykim362/mxnet,luoyetx/mxnet,DR08/mxnet,jiajiechen/mxnet,fullfanta/mxnet,ForkedReposBak/mxnet,saurabh3949/mxnet,ZihengJiang/mxnet,hotpxl/mxnet,rishita/mxnet,madjam/mxnet,jamesliu/mxnet,sergeykolychev/mxnet,crazy-cat/incubator-mxnet,tornadomeet/mxnet,kkk669/mxnet,larroy/mxnet,yuruofeifei/mxnet,ShownX/incubator-mxnet,gautamkmr/incubator-mxnet,vikingMei/mxnet,yajiedesign/mxnet,wangyum/mxnet,stefanhenneking/mxnet,eric-haibin-lin/mxnet,hpi-xnor/BMXNet,tornadomeet/mxnet,ptrendx/mxnet,CodingCat/mxnet,madjam/mxnet,vikingMei/mxnet,xcgoner/dist-mxnet,arikpoz/mxnet,Northrend/mxnet,arank/mxnet,yajiedesign/mxnet,yajiedesign/mxnet,nicklhy/mxnet,precedenceguo/mxnet,apaleyes/mxnet,leezu/mxnet,kevinthesun/mxnet,yajiedesign/mxnet,szha/mxnet,nicklhy/mxnet,mbaijal/incubator-mxnet,likelyzhao/mxnet,zhreshold/mxnet,weleen/mxnet,navrasio/mxnet,hpi-xnor/BMXNet,CodingCat/mxnet,kkk669/mxnet,CodingCat/mxnet,jennyzhang0215/incubator-mxnet,CodingCat/mxnet,hotpxl/mxnet,xcgoner/dist-mxnet,jamesliu/mxnet,yuruofeifei/mxnet,thirdwing/mxnet,sxjscience/mxnet,sxjscience/mxnet,Northrend/mxnet,Mega-DatA-Lab/mxnet,mbaijal/incubator-mxnet,solin319/incubator-mxnet,DickJC123/mxnet,jennyzhang0215/incubator-mxnet,gautamkmr/incubator-mxnet,coder-james/mxnet,ShownX/incubator-mxnet,nicklhy/mxnet,LinkHS/incubator-mxnet,antoan2/incubator-mxnet,LinkHS/incubator-mxnet,fullfanta/mxnet,vikingMei/mxnet,EvanzzzZ/mxnet,yuruofeifei/mxnet,antoan2/incubator-mxnet,formath/mxnet,jamesliu/mxnet,kevinthesun/mxnet,arank/mxnet,navrasio/mxnet,lxn2/mxnet,hesseltuinhof/mxnet,solin319/incubator-mxnet,fullfanta/mxnet,ForkedReposBak/mxnet,Ldpe2G/mxnet,TuSimple/mxnet,piiswrong/mxnet,sxjscience/mxnet,jennyzhang0215/incubator-mxnet,zhreshold/mxnet,wangyum/mxnet,thirdwing/mxnet,reminisce/mxnet,ShownX/incubator-mxnet,stefanhenneking/mxnet,larroy/mxnet,DR08/mxnet,DickJC123/mxnet,smolix/incubator-mxnet,Northrend/mxnet,xcgoner/dist-mxnet,saurabh3949/mxnet,lxn2/mxnet,stefanhenneking/mxnet,indhub/mxnet,larroy/mxnet,Northrend/mxnet,dmlc/mxnet,crazy-cat/incubator-mxnet,stefanhenneking/mxnet,rahul003/mxnet,pluskid/mxnet,zhreshold/mxnet,precedenceguo/mxnet,apache/incubator-mxnet,crazy-cat/incubator-mxnet,sxjscience/mxnet,kevinthesun/mxnet,saurabh3949/mxnet,dmlc/mxnet,CodingCat/mxnet,tlby/mxnet,LinkHS/incubator-mxnet,apaleyes/mxnet,apaleyes/mxnet,hotpxl/mxnet,indhub/mxnet,arikpoz/mxnet,thirdwing/mxnet,hotpxl/mxnet,hpi-xnor/BMXNet,apaleyes/mxnet,Prasad9/incubator-mxnet,jamesliu/mxnet,likelyzhao/mxnet,wangyum/mxnet,indhub/mxnet,vikingMei/mxnet,nicklhy/mxnet,sxjscience/mxnet,navrasio/mxnet,hotpxl/mxnet,nicklhy/mxnet,leezu/mxnet,Prasad9/incubator-mxnet,DR08/mxnet,Ldpe2G/mxnet,hpi-xnor/BMXNet,rishita/mxnet,smolix/incubator-mxnet,eric-haibin-lin/mxnet,EvanzzzZ/mxnet,yajiedesign/mxnet,zhreshold/mxnet,tornadomeet/mxnet,vikingMei/mxnet,danithaca/mxnet,likelyzhao/mxnet,CodingCat/mxnet,fullfanta/mxnet,ZihengJiang/mxnet,arikpoz/mxnet,xcgoner/dist-mxnet,ptrendx/mxnet,TuSimple/mxnet,jermainewang/mxnet,stefanhenneking/mxnet,leezu/mxnet,saurabh3949/mxnet,crazy-cat/incubator-mxnet,precedenceguo/mxnet,ForkedReposBak/mxnet,kkk669/mxnet,danithaca/mxnet,kkk669/mxnet,pluskid/mxnet,hpi-xnor/BMXNet,reminisce/mxnet,rishita/mxnet,crazy-cat/incubator-mxnet,jiajiechen/mxnet,kevinthesun/mxnet,reminisce/mxnet,gautamkmr/incubator-mxnet,ForkedReposBak/mxnet,jiajiechen/mxnet,Ldpe2G/mxnet,DR08/mxnet,smolix/incubator-mxnet,formath/mxnet,arikpoz/mxnet,jermainewang/mxnet,Northrend/mxnet,nicklhy/mxnet,LinkHS/incubator-mxnet,tlby/mxnet,solin319/incubator-mxnet,eric-haibin-lin/mxnet,fullfanta/mxnet,vikingMei/mxnet,saurabh3949/mxnet,Ldpe2G/mxnet,navrasio/mxnet,danithaca/mxnet,rishita/mxnet,xcgoner/dist-mxnet,piiswrong/mxnet,tlby/mxnet,dmlc/mxnet,stefanhenneking/mxnet,LinkHS/incubator-mxnet,navrasio/mxnet,hesseltuinhof/mxnet,ykim362/mxnet,eric-haibin-lin/mxnet,arikpoz/mxnet,ptrendx/mxnet,weleen/mxnet,jennyzhang0215/incubator-mxnet,TuSimple/mxnet,mbaijal/incubator-mxnet,coder-james/mxnet,likelyzhao/mxnet,kkk669/mxnet,ZihengJiang/mxnet,tornadomeet/mxnet,gautamkmr/incubator-mxnet,piiswrong/mxnet,TuSimple/mxnet,arikpoz/mxnet,hesseltuinhof/mxnet,thirdwing/mxnet,reminisce/mxnet,yajiedesign/mxnet,hesseltuinhof/mxnet,antoan2/incubator-mxnet,dmlc/mxnet,DickJC123/mxnet,rahul003/mxnet,hesseltuinhof/mxnet,piiswrong/mxnet,weleen/mxnet,ptrendx/mxnet,kevinthesun/mxnet,szha/mxnet,TuSimple/mxnet,mbaijal/incubator-mxnet,rahul003/mxnet,rahul003/mxnet,luoyetx/mxnet,rahul003/mxnet,coder-james/mxnet,TuSimple/mxnet,zhreshold/mxnet,coder-james/mxnet,smolix/incubator-mxnet,ZihengJiang/mxnet,sergeykolychev/mxnet,Mega-DatA-Lab/mxnet,sergeykolychev/mxnet,reminisce/mxnet,piiswrong/mxnet,EvanzzzZ/mxnet,precedenceguo/mxnet,xcgoner/dist-mxnet,szha/mxnet,wangyum/mxnet,pluskid/mxnet,madjam/mxnet,sxjscience/mxnet,tlby/mxnet,apaleyes/mxnet,formath/mxnet,jiajiechen/mxnet,dmlc/mxnet,danithaca/mxnet,ForkedReposBak/mxnet,rahul003/mxnet,yuruofeifei/mxnet,jamesliu/mxnet,kkk669/mxnet,vikingMei/mxnet,gautamkmr/incubator-mxnet,vikingMei/mxnet,Prasad9/incubator-mxnet,Mega-DatA-Lab/mxnet,crazy-cat/incubator-mxnet,apaleyes/mxnet,coder-james/mxnet,kevinthesun/mxnet,crazy-cat/incubator-mxnet,smolix/incubator-mxnet,coder-james/mxnet,dmlc/mxnet,jermainewang/mxnet,formath/mxnet,indhub/mxnet,TuSimple/mxnet,LinkHS/incubator-mxnet,tornadomeet/mxnet,ykim362/mxnet,ZihengJiang/mxnet,TuSimple/mxnet,sxjscience/mxnet,likelyzhao/mxnet,lxn2/mxnet,jiajiechen/mxnet,luoyetx/mxnet,gautamkmr/incubator-mxnet,hotpxl/mxnet,kkk669/mxnet,lxn2/mxnet,TuSimple/mxnet,solin319/incubator-mxnet,ShownX/incubator-mxnet,antoan2/incubator-mxnet,rishita/mxnet,ForkedReposBak/mxnet,pluskid/mxnet,jennyzhang0215/incubator-mxnet