travis: Set "dist: trusty" to mirror neovim/neovim setup
travis: Set "dist: trusty" to mirror neovim/neovim setup

ZyX-I/neovim-bot-ci,neovim/bot-ci,ZyX-I/neovim-bot-ci,neovim/bot-ci,neovim/bot-ci,ZyX-I/neovim-bot-ci