fix bug in optimizer epoch counter
fix bug in optimizer epoch counter

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