bash: HOMEBREW_UPGRADE_CLEANUP -> HOMEBREW_INSTALL_CLEANUP
bash: HOMEBREW_UPGRADE_CLEANUP -> HOMEBREW_INSTALL_CLEANUP

The former name is deprecated. The latter name is available now and will
be used in Homebrew 2.0: https://brew.sh/2019/01/09/homebrew-1.9.0/

jparise/dotfiles,jparise/dotfiles,jparise/dotfiles,jparise/dotfiles