MODULE-6105: Move .sync.yml travis configuration under .travis.yml:

This allows `modulesync` to work again for this module.

.sync.yml

@@ -3,6 +3,7 @@ appveyor.yml:
   delete: true
 spec/spec_helper.rb:
   allow_deprecations: true
+.travis.yml:
   extras:
   - rvm: 2.1.9
     script: bundle exec rake rubocop