Add centos to PRs
Add centos to PRs

yizhang82/corefx,billwert/corefx,stephenmichaelf/corefx,shimingsg/corefx,shimingsg/corefx,richlander/corefx,the-dwyer/corefx,zhenlan/corefx,iamjasonp/corefx,n1ghtmare/corefx,benpye/corefx,the-dwyer/corefx,seanshpark/corefx,Priya91/corefx-1,wtgodbe/corefx,Jiayili1/corefx,rjxby/corefx,ellismg/corefx,fgreinacher/corefx,SGuyGe/corefx,ViktorHofer/corefx,Chrisboh/corefx,mmitche/corefx,parjong/corefx,billwert/corefx,mafiya69/corefx,twsouthwick/corefx,mellinoe/corefx,krytarowski/corefx,dsplaisted/corefx,BrennanConroy/corefx,parjong/corefx,lggomez/corefx,billwert/corefx,elijah6/corefx,mokchhya/corefx,jlin177/corefx,DnlHarvey/corefx,rubo/corefx,ViktorHofer/corefx,jhendrixMSFT/corefx,vidhya-bv/corefx-sorting,nchikanov/corefx,stephenmichaelf/corefx,zhenlan/corefx,DnlHarvey/corefx,nbarbettini/corefx,marksmeltzer/corefx,rahku/corefx,mellinoe/corefx,Petermarcu/corefx,tijoytom/corefx,elijah6/corefx,dhoehna/corefx,zhenlan/corefx,rubo/corefx,Jiayili1/corefx,tijoytom/corefx,yizhang82/corefx,ravimeda/corefx,shahid-pk/corefx,richlander/corefx,mmitche/corefx,rubo/corefx,SGuyGe/corefx,khdang/corefx,mazong1123/corefx,YoupHulsebos/corefx,richlander/corefx,benjamin-bader/corefx,elijah6/corefx,ericstj/corefx,Petermarcu/corefx,marksmeltzer/corefx,lggomez/corefx,alexperovich/corefx,akivafr123/corefx,shimingsg/corefx,ericstj/corefx,ViktorHofer/corefx,nchikanov/corefx,axelheer/corefx,kkurni/corefx,kkurni/corefx,dsplaisted/corefx,cartermp/corefx,nbarbettini/corefx,parjong/corefx,rjxby/corefx,parjong/corefx,nchikanov/corefx,shmao/corefx,twsouthwick/corefx,krk/corefx,n1ghtmare/corefx,lggomez/corefx,cartermp/corefx,gkhanna79/corefx,tstringer/corefx,rubo/corefx,Priya91/corefx-1,krytarowski/corefx,lggomez/corefx,ptoonen/corefx,iamjasonp/corefx,seanshpark/corefx,shimingsg/corefx,stone-li/corefx,jlin177/corefx,690486439/corefx,DnlHarvey/corefx,kkurni/corefx,benjamin-bader/corefx,wtgodbe/corefx,mazong1123/corefx,mazong1123/corefx,iamjasonp/corefx,stephenmichaelf/corefx,manu-silicon/corefx,ptoonen/corefx,cartermp/corefx,alexperovich/corefx,mokchhya/corefx,mmitche/corefx,stephenmichaelf/corefx,yizhang82/corefx,DnlHarvey/corefx,axelheer/corefx,alexandrnikitin/corefx,elijah6/corefx,DnlHarvey/corefx,ptoonen/corefx,ellismg/corefx,shahid-pk/corefx,cartermp/corefx,shmao/corefx,weltkante/corefx,shmao/corefx,Chrisboh/corefx,stephenmichaelf/corefx,yizhang82/corefx,690486439/corefx,DnlHarvey/corefx,josguil/corefx,ptoonen/corefx,SGuyGe/corefx,stephenmichaelf/corefx,krytarowski/corefx,marksmeltzer/corefx,ravimeda/corefx,weltkante/corefx,alexandrnikitin/corefx,shahid-pk/corefx,marksmeltzer/corefx,kkurni/corefx,n1ghtmare/corefx,akivafr123/corefx,jcme/corefx,ericstj/corefx,rahku/corefx,ravimeda/corefx,zhenlan/corefx,cydhaselton/corefx,yizhang82/corefx,kkurni/corefx,adamralph/corefx,dotnet-bot/corefx,mazong1123/corefx,ellismg/corefx,manu-silicon/corefx,bitcrazed/corefx,dhoehna/corefx,richlander/corefx,stone-li/corefx,elijah6/corefx,ravimeda/corefx,cydhaselton/corefx,shimingsg/corefx,manu-silicon/corefx,manu-silicon/corefx,ViktorHofer/corefx,vidhya-bv/corefx-sorting,alexperovich/corefx,YoupHulsebos/corefx,Ermiar/corefx,nchikanov/corefx,benjamin-bader/corefx,ericstj/corefx,shahid-pk/corefx,dhoehna/corefx,rjxby/corefx,Ermiar/corefx,krytarowski/corefx,alexperovich/corefx,Petermarcu/corefx,MaggieTsang/corefx,pallavit/corefx,twsouthwick/corefx,gkhanna79/corefx,jlin177/corefx,mafiya69/corefx,JosephTremoulet/corefx,rahku/corefx,josguil/corefx,the-dwyer/corefx,janhenke/corefx,alexandrnikitin/corefx,akivafr123/corefx,krytarowski/corefx,jcme/corefx,alphonsekurian/corefx,benpye/corefx,lggomez/corefx,krk/corefx,jhendrixMSFT/corefx,jcme/corefx,Ermiar/corefx,weltkante/corefx,wtgodbe/corefx,iamjasonp/corefx,dhoehna/corefx,benpye/corefx,krk/corefx,ellismg/corefx,MaggieTsang/corefx,Petermarcu/corefx,manu-silicon/corefx,Chrisboh/corefx,the-dwyer/corefx,dotnet-bot/corefx,mokchhya/corefx,ptoonen/corefx,cydhaselton/corefx,gkhanna79/corefx,josguil/corefx,ravimeda/corefx,yizhang82/corefx,Priya91/corefx-1,akivafr123/corefx,SGuyGe/corefx,mmitche/corefx,alexperovich/corefx,seanshpark/corefx,ptoonen/corefx,JosephTremoulet/corefx,benjamin-bader/corefx,gkhanna79/corefx,yizhang82/corefx,fgreinacher/corefx,fgreinacher/corefx,ViktorHofer/corefx,parjong/corefx,bitcrazed/corefx,pallavit/corefx,wtgodbe/corefx,jlin177/corefx,krytarowski/corefx,n1ghtmare/corefx,shimingsg/corefx,gkhanna79/corefx,mokchhya/corefx,ViktorHofer/corefx,nbarbettini/corefx,alphonsekurian/corefx,mmitche/corefx,gkhanna79/corefx,Ermiar/corefx,dotnet-bot/corefx,Petermarcu/corefx,parjong/corefx,mazong1123/corefx,MaggieTsang/corefx,JosephTremoulet/corefx,Chrisboh/corefx,axelheer/corefx,parjong/corefx,benpye/corefx,pallavit/corefx,tijoytom/corefx,billwert/corefx,690486439/corefx,alphonsekurian/corefx,dsplaisted/corefx,dotnet-bot/corefx,krk/corefx,mmitche/corefx,BrennanConroy/corefx,dhoehna/corefx,janhenke/corefx,shmao/corefx,bitcrazed/corefx,stone-li/corefx,YoupHulsebos/corefx,tstringer/corefx,jcme/corefx,YoupHulsebos/corefx,alexperovich/corefx,ravimeda/corefx,seanshpark/corefx,jhendrixMSFT/corefx,wtgodbe/corefx,krk/corefx,690486439/corefx,YoupHulsebos/corefx,rjxby/corefx,dhoehna/corefx,benpye/corefx,billwert/corefx,vidhya-bv/corefx-sorting,nchikanov/corefx,Ermiar/corefx,tstringer/corefx,mokchhya/corefx,bitcrazed/corefx,rahku/corefx,Ermiar/corefx,Ermiar/corefx,JosephTremoulet/corefx,iamjasonp/corefx,krytarowski/corefx,axelheer/corefx,Jiayili1/corefx,MaggieTsang/corefx,nbarbettini/corefx,nbarbettini/corefx,shahid-pk/corefx,lggomez/corefx,stone-li/corefx,khdang/corefx,BrennanConroy/corefx,rubo/corefx,pallavit/corefx,Jiayili1/corefx,seanshpark/corefx,akivafr123/corefx,jlin177/corefx,stone-li/corefx,josguil/corefx,axelheer/corefx,zhenlan/corefx,alphonsekurian/corefx,seanshpark/corefx,rahku/corefx,richlander/corefx,jcme/corefx,benjamin-bader/corefx,mellinoe/corefx,dotnet-bot/corefx,tijoytom/corefx,ViktorHofer/corefx,nchikanov/corefx,marksmeltzer/corefx,weltkante/corefx,weltkante/corefx,tstringer/corefx,rjxby/corefx,alphonsekurian/corefx,benpye/corefx,vidhya-bv/corefx-sorting,billwert/corefx,Jiayili1/corefx,twsouthwick/corefx,khdang/corefx,mafiya69/corefx,rahku/corefx,JosephTremoulet/corefx,tijoytom/corefx,mafiya69/corefx,mellinoe/corefx,mellinoe/corefx,twsouthwick/corefx,Jiayili1/corefx,bitcrazed/corefx,janhenke/corefx,the-dwyer/corefx,ericstj/corefx,dotnet-bot/corefx,Chrisboh/corefx,khdang/corefx,ericstj/corefx,vidhya-bv/corefx-sorting,cydhaselton/corefx,iamjasonp/corefx,jhendrixMSFT/corefx,Jiayili1/corefx,janhenke/corefx,gkhanna79/corefx,mokchhya/corefx,dhoehna/corefx,690486439/corefx,mazong1123/corefx,iamjasonp/corefx,alexandrnikitin/corefx,YoupHulsebos/corefx,elijah6/corefx,mellinoe/corefx,the-dwyer/corefx,shmao/corefx,Priya91/corefx-1,zhenlan/corefx,MaggieTsang/corefx,dotnet-bot/corefx,wtgodbe/corefx,jlin177/corefx,rjxby/corefx,ravimeda/corefx,jhendrixMSFT/corefx,cydhaselton/corefx,tijoytom/corefx,rahku/corefx,marksmeltzer/corefx,twsouthwick/corefx,janhenke/corefx,stephenmichaelf/corefx,twsouthwick/corefx,kkurni/corefx,adamralph/corefx,MaggieTsang/corefx,josguil/corefx,SGuyGe/corefx,lggomez/corefx,tstringer/corefx,Petermarcu/corefx,stone-li/corefx,YoupHulsebos/corefx,pallavit/corefx,cartermp/corefx,Priya91/corefx-1,ptoonen/corefx,billwert/corefx,jlin177/corefx,weltkante/corefx,Chrisboh/corefx,krk/corefx,ellismg/corefx,alphonsekurian/corefx,ericstj/corefx,josguil/corefx,jhendrixMSFT/corefx,khdang/corefx,shmao/corefx,richlander/corefx,fgreinacher/corefx,weltkante/corefx,n1ghtmare/corefx,wtgodbe/corefx,janhenke/corefx,stone-li/corefx,manu-silicon/corefx,benjamin-bader/corefx,mafiya69/corefx,Priya91/corefx-1,krk/corefx,manu-silicon/corefx,seanshpark/corefx,rjxby/corefx,the-dwyer/corefx,alexandrnikitin/corefx,cydhaselton/corefx,jcme/corefx,khdang/corefx,cydhaselton/corefx,ellismg/corefx,alphonsekurian/corefx,pallavit/corefx,Petermarcu/corefx,richlander/corefx,nchikanov/corefx,mafiya69/corefx,axelheer/corefx,JosephTremoulet/corefx,zhenlan/corefx,MaggieTsang/corefx,jhendrixMSFT/corefx,JosephTremoulet/corefx,adamralph/corefx,nbarbettini/corefx,cartermp/corefx,shimingsg/corefx,mazong1123/corefx,elijah6/corefx,tstringer/corefx,shmao/corefx,marksmeltzer/corefx,nbarbettini/corefx,shahid-pk/corefx,alexperovich/corefx,SGuyGe/corefx,mmitche/corefx,DnlHarvey/corefx,tijoytom/corefx