travis: use latest go tool repo
travis: use latest go tool repo

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