fix travis cache of govendor
fix travis cache of govendor

maytechnet/nomad-ui,Wintermute1/hashi-ui,Wintermute1/hashi-ui,iverberk/nomad-ui,jippi/hashi-ui,Wintermute1/hashi-ui,jippi/hashi-ui,jippi/hashi-ui,iverberk/nomad-ui,iverberk/nomad-ui,maytechnet/nomad-ui,maytechnet/nomad-ui,maytechnet/nomad-ui,Wintermute1/hashi-ui