.travis.yml: Change umask to 022 during script
.travis.yml: Change umask to 022 during script

For brew audit fix error: Incorrect file permissions (664)

Linuxbrew/brew,maxim-belkin/brew,hanxue/linuxbrew,Linuxbrew/brew,hanxue/linuxbrew,maxim-belkin/brew,maxim-belkin/brew,Linuxbrew/brew,rwhogg/brew,hanxue/linuxbrew,rwhogg/brew,Linuxbrew/brew,rwhogg/brew