ci(travis): quote pathspecs used with `git ls-files` [skip ci]
ci(travis): quote pathspecs used with `git ls-files` [skip ci]

* Automated using https://github.com/myii/ssf-formula/pull/107

saltstack-formulas/apt-cacher-formula,saltstack-formulas/apt-cacher-formula,saltstack-formulas/apt-cacher-formula