travis.yml - add bionic 18.04 job
travis.yml - add bionic 18.04 job

puma/puma,eileencodes/puma,looker/puma,eileencodes/puma,puma/puma,puma/puma,eileencodes/puma,eileencodes/puma,looker/puma,puma/puma,looker/puma,looker/puma