[example] partition validation data for imagenet in distributed example
[example] partition validation data for imagenet in distributed example

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