docs(cluster-discovery): add caution to use old discovery endpoint
docs(cluster-discovery): add caution to use old discovery endpoint

mwitkow-io/etcd,delkyd/etcd,njharman/etcd,gouyang/etcd,xychu/etcd,etcd-io/etcd,improbable-io/etcd,visheshnp/etcd,Winslett/etcd,njucslqq/etcd,li-ang/etcd,glensc/etcd,qqsun8819/etcd,tamird/etcd,snailwalker/etcd,hpcloud/etcd,msanterre/etcd,bspline/etcd,steveeJ/etcd,glensc/etcd,msanterre/etcd,gityf/etcd,akauppi/etcd,dannysauer/etcd,cognusion/etcd,Yhgenomics/etcd,yifan-gu/etcd,freeloop1114/etcd,spotify/etcd,nkhare/etcd,cvik/etcd,heyitsanthony/etcd,tangkun75/etcd,youxidev/etcd,mkumatag/etcd,nekto0n/etcd,chipironcin/etcd,imzhulei/etcd,sofuture/etcd,kkaneda/etcd,imzhulei/etcd,princeqjzh/etcd,nekto0n/etcd,mqliang/etcd,YuleiXiao/etcd,zaphod-concur/etcd,nieanan/etcd,vimalk78/etcd,yifan-gu/etcd,jlamillan/etcd,cvik/etcd,jonboulle/etcd,wowsoso/etcd,handsomesun/etcd,xebitstudios/etcd,purpleidea/etcd,openedbox/etcd,betawaffle/etcd,axingblog/etcd,pengzj/etcd,bluebreezecf/etcd,junxu/etcd,gae123/etcd,mischief/etcd,etcd-io/etcd,giantswarm/etcd,fgbreel/etcd,cvik/etcd,dterei/etcd,bdarnell/etcd,glycerine/etcd,hzy001/etcd,spotify/etcd,insequent/etcd,whuwxl/etcd,shakefu/etcd,cockroachdb/etcd,visheshnp/etcd,yichengq/etcd,dterei/etcd,insionng/etcd,wantonsolutions/dinv-etcd,princeqjzh/etcd,mischief/etcd,devfreesg/etcd,handsomesun/etcd,fasaxc/etcd,jonboulle/etcd,olark/etcd,qiaochao911/etcd,westhood/etcd,armstrongli/etcd,sayden/etcd,kingland/etcd,hroyrh/etcd,yudai/etcd,tempbottle/etcd,onlyjob/etcd,gyuho/etcd,asim/etcd,lzbgt/etcd,plasticbox/etcd,xebitstudios/etcd,bluebreezecf/etcd,luxas/etcd,spacejam/etcd,xiang90/etcd,rnaveiras/etcd,mkumatag/etcd,CrazyJvm/etcd,pauldallen/etcd,onlyjob/etcd,ktateish/etcd,raoofm/etcd,whuwxl/etcd,mqliang/etcd,sayden/etcd,sebschrader/etcd,justintung/etcd,QuantiumTechnology/etcd,SivagnanamCiena/etcd,shawnps/etcd,xychu/etcd,joshix/etcd,insionng/etcd,swingbach/etcd,dnaeon/etcd,a-robinson/etcd,honeyqa/etcd,tangkun75/etcd,HideoYamauchi/etcd,purpleidea/etcd,yyljlyy/etcd,honeyqa/etcd,shafreeck/etcd,siddontang/etcd,gae123/etcd,combk8s/etcd,ajityagaty/etcd,iamqizhao/etcd,elimisteve/etcd,polvi/etcd,jeremyeder/etcd,tguangch/etcd,chenbaihu/etcd,glevand/coreos--etcd,chai2010-playground/etcd,barakmich/etcd,achanda/etcd,armstrongli/etcd,shawnps/etcd,junxu/etcd,jmptrader/etcd,li-ang/etcd,xdlinear/etcd,mickep76/etcd,jeremyeder/etcd,pauldallen/etcd,asim/etcd,jchauncey/etcd,CrazyJvm/etcd,mike-lerch/etcd,tguangch/etcd,cockroachdb/etcd,mike-lerch/etcd,arthurcolle/etcd,crandles/etcd,mwitkow/etcd,glycerine/etcd,jlamillan/etcd,betawaffle/etcd,OyTao/etcd_learning,OyTao/etcd_learning,gityf/etcd,spacejam/etcd,coreos/etcd,Eagle-X/etcd,freeloop1114/etcd,zaphod-concur/etcd,endocode/etcd,delkyd/etcd,barakmich/etcd,mickep76/etcd,nieanan/etcd,pigfoot/etcd,polvi/etcd,arthurcolle/etcd,elimisteve/etcd,insequent/etcd,combk8s/etcd,robszumski/etcd,HideoYamauchi/etcd,dalanlan/etcd,cognusion/etcd,fasaxc/etcd,StorReduce/etcd,jravetch/etcd,bdarnell/etcd,cchamplin/etcd,sebrandon1/etcd,rchicoli/etcd,oscarrr110/etcd,wantonsolutions/dinv-etcd,hongchaodeng/etcd,achanda/etcd,TheHippo/etcd,YuleiXiao/etcd,jefby/etcd,tamird/etcd,hongchaodeng/etcd,SivagnanamCiena/etcd,TheHippo/etcd,tempbottle/etcd,offscale/etcd,wfxiang08/etcd,xdlinear/etcd,Yhgenomics/etcd,oscarrr110/etcd,pengzj/etcd,wowsoso/etcd,qqsun8819/etcd,gouyang/etcd,spotify/etcd,hongbinz/etcd,Winslett/etcd,sebrandon1/etcd,jefby/etcd,njucslqq/etcd,chai2010-playground/etcd,fanminshi/etcd,snailwalker/etcd,olark/etcd,dalanlan/etcd,kingland/etcd,gosharplite/etcd,cchamplin/etcd,dnaeon/etcd,QuantiumTechnology/etcd,ajityagaty/etcd,cvik/etcd,yichengq/etcd,robszumski/etcd,wfxiang08/etcd,ajityagaty/etcd,a-robinson/etcd,ecnahc515/etcd,hongbinz/etcd,bakins/etcd,hroyrh/etcd,svdata/etcd,ravigadde/etcd,lorneli/etcd,StorReduce/etcd,ravigadde/etcd,westhood/etcd,spotify/etcd,csuideal/etcd,wantonsolutions/dinv-etcd,gosharplite/etcd,axingblog/etcd,es-chow/etcd,yyljlyy/etcd,es-chow/etcd,lorneli/etcd,devfreesg/etcd,linuxcer/etcd,ktateish/etcd,yudai/etcd,chipironcin/etcd,fgbreel/etcd,mgoelzer/etcd-fork2,beni55/etcd,shakefu/etcd,buaazp/etcd,mgoelzer/etcd-fork2,crandles/etcd,swingbach/etcd,ecnahc515/etcd,mitake/etcd,Eagle-X/etcd,chai2010/etcd,qiaochao911/etcd,akauppi/etcd,mwitkow-io/etcd,kkaneda/etcd,rchicoli/etcd,lzbgt/etcd,sebschrader/etcd,ylong/etcd,bakins/etcd,heyitsanthony/etcd,raoofm/etcd,beni55/etcd,endocode/etcd,iamqizhao/etcd,chenbaihu/etcd,steveeJ/etcd,siddontang/etcd,openedbox/etcd,glevand/coreos--etcd,xiang90/etcd,csuideal/etcd,jchauncey/etcd,jravetch/etcd,linuxcer/etcd,hpcloud/etcd,gyuho/etcd,plasticbox/etcd,gtank/etcd,fasaxc/etcd,xueshanf/etcd,youxidev/etcd,luxas/etcd,joshix/etcd,shafreeck/etcd,rnaveiras/etcd,offscale/etcd,jmptrader/etcd,lumjjb/etcd,etcd-io/etcd,mitake/etcd,Timer/etcd,ylong/etcd,mwitkow/etcd,svdata/etcd,xueshanf/etcd,chai2010/etcd,mqliang/etcd,nkhare/etcd,sofuture/etcd,justintung/etcd,fanminshi/etcd,improbable-io/etcd,coreos/etcd,bspline/etcd,njharman/etcd,sinsharat/etcd,hzy001/etcd,dannysauer/etcd,sinsharat/etcd,buaazp/etcd,vimalk78/etcd,rnaveiras/etcd,giantswarm/etcd,gtank/etcd,Timer/etcd,lumjjb/etcd,mkumatag/etcd