NEWS: update with v3.0.15
NEWS: update with v3.0.15

heyitsanthony/etcd,endocode/etcd,sinsharat/etcd,mkumatag/etcd,bluebreezecf/etcd,lorneli/etcd,handsomesun/etcd,visheshnp/etcd,sebrandon1/etcd,heyitsanthony/etcd,rchicoli/etcd,vimalk78/etcd,qqsun8819/etcd,ravigadde/etcd,li-ang/etcd,mickep76/etcd,vimalk78/etcd,dannysauer/etcd,CrazyJvm/etcd,plasticbox/etcd,mkumatag/etcd,akauppi/etcd,etcd-io/etcd,sebrandon1/etcd,rchicoli/etcd,a-robinson/etcd,mqliang/etcd,OyTao/etcd_learning,etcd-io/etcd,jlamillan/etcd,coreos/etcd,ajityagaty/etcd,insequent/etcd,joshix/etcd,ajityagaty/etcd,yudai/etcd,tguangch/etcd,mkumatag/etcd,mqliang/etcd,insequent/etcd,jlamillan/etcd,handsomesun/etcd,whuwxl/etcd,rnaveiras/etcd,armstrongli/etcd,gyuho/etcd,endocode/etcd,etcd-io/etcd,ajityagaty/etcd,CrazyJvm/etcd,mickep76/etcd,hongchaodeng/etcd,plasticbox/etcd,qqsun8819/etcd,coreos/etcd,sinsharat/etcd,fanminshi/etcd,yudai/etcd,tguangch/etcd,joshix/etcd,lumjjb/etcd,cockroachdb/etcd,a-robinson/etcd,lorneli/etcd,cockroachdb/etcd,bluebreezecf/etcd,armstrongli/etcd,xiang90/etcd,YuleiXiao/etcd,fanminshi/etcd,rnaveiras/etcd,OyTao/etcd_learning,glevand/coreos--etcd,xiang90/etcd,gyuho/etcd,mqliang/etcd,visheshnp/etcd,li-ang/etcd,lumjjb/etcd,dannysauer/etcd,rnaveiras/etcd,bdarnell/etcd,bdarnell/etcd,hongchaodeng/etcd,ravigadde/etcd,whuwxl/etcd,glevand/coreos--etcd,akauppi/etcd,YuleiXiao/etcd