integration: add tests for MinCreateRev and MaxCreateRev
integration: add tests for MinCreateRev and MaxCreateRev

joshix/etcd,luxas/etcd,mqliang/etcd,sebrandon1/etcd,ravigadde/etcd,qqsun8819/etcd,mkumatag/etcd,joshix/etcd,a-robinson/etcd,etcd-io/etcd,cockroachdb/etcd,coreos/etcd,zaphod-concur/etcd,etcd-io/etcd,nekto0n/etcd,rnaveiras/etcd,qqsun8819/etcd,bluebreezecf/etcd,gyuho/etcd,tguangch/etcd,ravigadde/etcd,jlamillan/etcd,whuwxl/etcd,whuwxl/etcd,a-robinson/etcd,mqliang/etcd,jlamillan/etcd,mkumatag/etcd,dannysauer/etcd,rchicoli/etcd,zaphod-concur/etcd,dannysauer/etcd,bluebreezecf/etcd,li-ang/etcd,sebrandon1/etcd,mickep76/etcd,lumjjb/etcd,yudai/etcd,plasticbox/etcd,bdarnell/etcd,YuleiXiao/etcd,hongchaodeng/etcd,fanminshi/etcd,visheshnp/etcd,insequent/etcd,visheshnp/etcd,ajityagaty/etcd,rnaveiras/etcd,plasticbox/etcd,CrazyJvm/etcd,tguangch/etcd,gyuho/etcd,YuleiXiao/etcd,xiang90/etcd,yudai/etcd,endocode/etcd,rnaveiras/etcd,rchicoli/etcd,bdarnell/etcd,coreos/etcd,vimalk78/etcd,akauppi/etcd,OyTao/etcd_learning,fanminshi/etcd,xiang90/etcd,heyitsanthony/etcd,nekto0n/etcd,luxas/etcd,armstrongli/etcd,ajityagaty/etcd,lorneli/etcd,lumjjb/etcd,CrazyJvm/etcd,endocode/etcd,li-ang/etcd,lorneli/etcd,OyTao/etcd_learning,glevand/coreos--etcd,heyitsanthony/etcd,akauppi/etcd,handsomesun/etcd,hongchaodeng/etcd,ajityagaty/etcd,sinsharat/etcd,mkumatag/etcd,cockroachdb/etcd,insequent/etcd,etcd-io/etcd,handsomesun/etcd,mickep76/etcd,glevand/coreos--etcd,armstrongli/etcd,sinsharat/etcd,mqliang/etcd,vimalk78/etcd