switch the parameter index in GruStepLayer in test_LayerGrad
switch the parameter index in GruStepLayer in test_LayerGrad

livc/Paddle,hedaoyuan/Paddle,cxysteven/Paddle,tensor-tang/Paddle,lispc/Paddle,QiJune/Paddle,reyoung/Paddle,gangliao/Paddle,baidu/Paddle,pengli09/Paddle,hedaoyuan/Paddle,wen-bo-yang/Paddle,Canpio/Paddle,cxysteven/Paddle,yu239/Paddle,hedaoyuan/Paddle,hedaoyuan/Paddle,QiJune/Paddle,luotao1/Paddle,putcn/Paddle,pkuyym/Paddle,QiJune/Paddle,Canpio/Paddle,Canpio/Paddle,lcy-seso/Paddle,tensor-tang/Paddle,yu239/Paddle,baidu/Paddle,reyoung/Paddle,lcy-seso/Paddle,lispc/Paddle,livc/Paddle,emailweixu/Paddle,pengli09/Paddle,putcn/Paddle,gangliao/Paddle,PaddlePaddle/Paddle,putcn/Paddle,putcn/Paddle,luotao1/Paddle,lispc/Paddle,gangliao/Paddle,wen-bo-yang/Paddle,PaddlePaddle/Paddle,Canpio/Paddle,lispc/Paddle,jacquesqiao/Paddle,emailweixu/Paddle,pengli09/Paddle,cxysteven/Paddle,chengduoZH/Paddle,PaddlePaddle/Paddle,wen-bo-yang/Paddle,yu239/Paddle,emailweixu/Paddle,hedaoyuan/Paddle,hedaoyuan/Paddle,cxysteven/Paddle,baidu/Paddle,lcy-seso/Paddle,yu239/Paddle,PaddlePaddle/Paddle,pengli09/Paddle,putcn/Paddle,gangliao/Paddle,tensor-tang/Paddle,pkuyym/Paddle,Canpio/Paddle,gangliao/Paddle,emailweixu/Paddle,PaddlePaddle/Paddle,reyoung/Paddle,reyoung/Paddle,jacquesqiao/Paddle,hedaoyuan/Paddle,pengli09/Paddle,luotao1/Paddle,chengduoZH/Paddle,chengduoZH/Paddle,livc/Paddle,cxysteven/Paddle,yu239/Paddle,livc/Paddle,jacquesqiao/Paddle,gangliao/Paddle,livc/Paddle,wen-bo-yang/Paddle,hedaoyuan/Paddle,baidu/Paddle,lcy-seso/Paddle,cxysteven/Paddle,yu239/Paddle,tensor-tang/Paddle,pengli09/Paddle,PaddlePaddle/Paddle,lispc/Paddle,baidu/Paddle,reyoung/Paddle,lcy-seso/Paddle,jacquesqiao/Paddle,pengli09/Paddle,livc/Paddle,lispc/Paddle,QiJune/Paddle,jacquesqiao/Paddle,luotao1/Paddle,lispc/Paddle,tensor-tang/Paddle,yu239/Paddle,chengduoZH/Paddle,cxysteven/Paddle,pkuyym/Paddle,gangliao/Paddle,QiJune/Paddle,yu239/Paddle,pkuyym/Paddle,lcy-seso/Paddle,PaddlePaddle/Paddle,Canpio/Paddle,Canpio/Paddle,wen-bo-yang/Paddle,livc/Paddle,pkuyym/Paddle,luotao1/Paddle,lispc/Paddle,emailweixu/Paddle,reyoung/Paddle,jacquesqiao/Paddle,wen-bo-yang/Paddle,chengduoZH/Paddle,putcn/Paddle,QiJune/Paddle,pengli09/Paddle,pkuyym/Paddle,wen-bo-yang/Paddle,emailweixu/Paddle,luotao1/Paddle,luotao1/Paddle,Canpio/Paddle,emailweixu/Paddle