fix bug in update ttl
fix bug in update ttl

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