add infer_type for regression ops, fix issues#9847 (#9848)
add infer_type for regression ops, fix issues#9847 (#9848)

* add infer_type for regression ops

* trigger CI

tornadomeet/mxnet,CodingCat/mxnet,TuSimple/mxnet,jamesliu/mxnet,CodingCat/mxnet,reminisce/mxnet,leezu/mxnet,TuSimple/mxnet,jiajiechen/mxnet,LinkHS/incubator-mxnet,eric-haibin-lin/mxnet,jamesliu/mxnet,rahul003/mxnet,leezu/mxnet,sxjscience/mxnet,szha/mxnet,LinkHS/incubator-mxnet,mbaijal/incubator-mxnet,jamesliu/mxnet,fullfanta/mxnet,CodingCat/mxnet,precedenceguo/mxnet,szha/mxnet,navrasio/mxnet,DickJC123/mxnet,eric-haibin-lin/mxnet,DickJC123/mxnet,zhreshold/mxnet,tornadomeet/mxnet,fullfanta/mxnet,precedenceguo/mxnet,luoyetx/mxnet,TuSimple/mxnet,LinkHS/incubator-mxnet,mbaijal/incubator-mxnet,LinkHS/incubator-mxnet,jiajiechen/mxnet,precedenceguo/mxnet,sxjscience/mxnet,sxjscience/mxnet,zhreshold/mxnet,leezu/mxnet,luoyetx/mxnet,yajiedesign/mxnet,indhub/mxnet,fullfanta/mxnet,szha/mxnet,CodingCat/mxnet,dmlc/mxnet,precedenceguo/mxnet,zhreshold/mxnet,larroy/mxnet,precedenceguo/mxnet,dmlc/mxnet,TuSimple/mxnet,tlby/mxnet,ptrendx/mxnet,ptrendx/mxnet,TuSimple/mxnet,indhub/mxnet,jamesliu/mxnet,ptrendx/mxnet,leezu/mxnet,jamesliu/mxnet,tlby/mxnet,zhreshold/mxnet,precedenceguo/mxnet,tornadomeet/mxnet,mbaijal/incubator-mxnet,ForkedReposBak/mxnet,navrasio/mxnet,jiajiechen/mxnet,leezu/mxnet,tornadomeet/mxnet,larroy/mxnet,zhreshold/mxnet,apache/incubator-mxnet,dmlc/mxnet,zhreshold/mxnet,TuSimple/mxnet,yajiedesign/mxnet,szha/mxnet,apache/incubator-mxnet,rahul003/mxnet,dmlc/mxnet,navrasio/mxnet,jamesliu/mxnet,fullfanta/mxnet,rahul003/mxnet,ptrendx/mxnet,ptrendx/mxnet,jiajiechen/mxnet,larroy/mxnet,rahul003/mxnet,szha/mxnet,CodingCat/mxnet,yajiedesign/mxnet,sxjscience/mxnet,zhreshold/mxnet,reminisce/mxnet,jiajiechen/mxnet,ptrendx/mxnet,tornadomeet/mxnet,szha/mxnet,szha/mxnet,apache/incubator-mxnet,larroy/mxnet,luoyetx/mxnet,ForkedReposBak/mxnet,precedenceguo/mxnet,larroy/mxnet,zhreshold/mxnet,TuSimple/mxnet,reminisce/mxnet,ForkedReposBak/mxnet,sxjscience/mxnet,eric-haibin-lin/mxnet,tornadomeet/mxnet,yajiedesign/mxnet,ptrendx/mxnet,indhub/mxnet,CodingCat/mxnet,LinkHS/incubator-mxnet,luoyetx/mxnet,eric-haibin-lin/mxnet,rahul003/mxnet,mbaijal/incubator-mxnet,luoyetx/mxnet,ptrendx/mxnet,indhub/mxnet,tlby/mxnet,jiajiechen/mxnet,navrasio/mxnet,fullfanta/mxnet,sxjscience/mxnet,mbaijal/incubator-mxnet,jiajiechen/mxnet,tlby/mxnet,tlby/mxnet,dmlc/mxnet,jiajiechen/mxnet,ForkedReposBak/mxnet,ForkedReposBak/mxnet,navrasio/mxnet,LinkHS/incubator-mxnet,tlby/mxnet,tlby/mxnet,tornadomeet/mxnet,navrasio/mxnet,dmlc/mxnet,zhreshold/mxnet,leezu/mxnet,sxjscience/mxnet,rahul003/mxnet,mbaijal/incubator-mxnet,LinkHS/incubator-mxnet,larroy/mxnet,jamesliu/mxnet,CodingCat/mxnet,luoyetx/mxnet,tlby/mxnet,TuSimple/mxnet,leezu/mxnet,navrasio/mxnet,navrasio/mxnet,yajiedesign/mxnet,rahul003/mxnet,jiajiechen/mxnet,yajiedesign/mxnet,luoyetx/mxnet,reminisce/mxnet,larroy/mxnet,szha/mxnet,indhub/mxnet,luoyetx/mxnet,indhub/mxnet,mbaijal/incubator-mxnet,szha/mxnet,rahul003/mxnet,leezu/mxnet,eric-haibin-lin/mxnet,precedenceguo/mxnet,tornadomeet/mxnet,dmlc/mxnet,yajiedesign/mxnet,larroy/mxnet,reminisce/mxnet,LinkHS/incubator-mxnet,fullfanta/mxnet,ForkedReposBak/mxnet,reminisce/mxnet,CodingCat/mxnet,ForkedReposBak/mxnet,eric-haibin-lin/mxnet,apache/incubator-mxnet,reminisce/mxnet,TuSimple/mxnet,jamesliu/mxnet,DickJC123/mxnet,leezu/mxnet,yajiedesign/mxnet,DickJC123/mxnet,sxjscience/mxnet,fullfanta/mxnet,tlby/mxnet,ptrendx/mxnet,ForkedReposBak/mxnet,eric-haibin-lin/mxnet,TuSimple/mxnet,eric-haibin-lin/mxnet,sxjscience/mxnet,indhub/mxnet,rahul003/mxnet,tlby/mxnet,mbaijal/incubator-mxnet,jamesliu/mxnet,luoyetx/mxnet,eric-haibin-lin/mxnet,reminisce/mxnet,larroy/mxnet,LinkHS/incubator-mxnet,reminisce/mxnet,reminisce/mxnet,fullfanta/mxnet,indhub/mxnet,dmlc/mxnet,fullfanta/mxnet,mbaijal/incubator-mxnet,tornadomeet/mxnet,indhub/mxnet,yajiedesign/mxnet,precedenceguo/mxnet,navrasio/mxnet,dmlc/mxnet,ForkedReposBak/mxnet,ptrendx/mxnet,CodingCat/mxnet