ci: merge travis matrix, add `salt-lint` & `rubocop` to `lint` job
ci: merge travis matrix, add `salt-lint` & `rubocop` to `lint` job

* Automated using https://github.com/myii/ssf-formula/pull/60

saltstack-formulas/fail2ban-formula,saltstack-formulas/fail2ban-formula,saltstack-formulas/fail2ban-formula