update travis file to download latest etcd
update travis file to download latest etcd

ppknap/kite,rjeczalik/kite,ppknap/kite,koding/kite,cihangir/kite,fatih/kite,rjeczalik/kite,koding/kite,leeola/kite,mischief/kite,wingyplus/kite,wingyplus/kite,leeola/kite,fatih/kite,280455936/kite,mischief/kite,ppknap/kite,koding/kite,280455936/kite,rjeczalik/kite,cihangir/kite