etcd-agent: get base when renaming
etcd-agent: get base when renaming

Partially related to https://github.com/coreos/etcd/issues/4552.

sofuture/etcd,glevand/coreos--etcd,bluebreezecf/etcd,handsomesun/etcd,etcd-io/etcd,siddontang/etcd,handsomesun/etcd,swingbach/etcd,xiang90/etcd,insequent/etcd,vimalk78/etcd,wantonsolutions/dinv-etcd,cockroachdb/etcd,luxas/etcd,mkumatag/etcd,heyitsanthony/etcd,akauppi/etcd,bdarnell/etcd,StorReduce/etcd,bdarnell/etcd,heyitsanthony/etcd,tamird/etcd,bluebreezecf/etcd,rnaveiras/etcd,dnaeon/etcd,xiang90/etcd,lorneli/etcd,ravigadde/etcd,swingbach/etcd,lumjjb/etcd,purpleidea/etcd,coreos/etcd,lumjjb/etcd,cockroachdb/etcd,purpleidea/etcd,armstrongli/etcd,sebrandon1/etcd,luxas/etcd,qqsun8819/etcd,achanda/etcd,fanminshi/etcd,OyTao/etcd_learning,mqliang/etcd,tguangch/etcd,dnaeon/etcd,visheshnp/etcd,linuxcer/etcd,achanda/etcd,li-ang/etcd,ajityagaty/etcd,sinsharat/etcd,jonboulle/etcd,zaphod-concur/etcd,ravigadde/etcd,rnaveiras/etcd,mqliang/etcd,endocode/etcd,hongchaodeng/etcd,glycerine/etcd,jlamillan/etcd,jlamillan/etcd,a-robinson/etcd,qqsun8819/etcd,joshix/etcd,nekto0n/etcd,westhood/etcd,siddontang/etcd,yudai/etcd,visheshnp/etcd,CrazyJvm/etcd,coreos/etcd,fanminshi/etcd,endocode/etcd,YuleiXiao/etcd,li-ang/etcd,dannysauer/etcd,wantonsolutions/dinv-etcd,CrazyJvm/etcd,vimalk78/etcd,mkumatag/etcd,rchicoli/etcd,ajityagaty/etcd,mkumatag/etcd,plasticbox/etcd,tamird/etcd,gyuho/etcd,rchicoli/etcd,sinsharat/etcd,chipironcin/etcd,wantonsolutions/dinv-etcd,ktateish/etcd,sebrandon1/etcd,gyuho/etcd,ajityagaty/etcd,zaphod-concur/etcd,mickep76/etcd,linuxcer/etcd,hongchaodeng/etcd,whuwxl/etcd,dannysauer/etcd,glycerine/etcd,plasticbox/etcd,rnaveiras/etcd,glevand/coreos--etcd,chipironcin/etcd,armstrongli/etcd,StorReduce/etcd,mqliang/etcd,ktateish/etcd,westhood/etcd,OyTao/etcd_learning,insequent/etcd,sofuture/etcd,lorneli/etcd,etcd-io/etcd,yudai/etcd,YuleiXiao/etcd,akauppi/etcd,a-robinson/etcd,jonboulle/etcd,etcd-io/etcd,whuwxl/etcd,tguangch/etcd,mickep76/etcd,nekto0n/etcd,joshix/etcd