enable unified mode

[karlamrhein]

enable unified mode as described here
https://docs.chef.io/deprecations_unified_mode/

[hrak]

This will also require chef_version '>= 15.3' in metadata since unified_mode is only supported from 15.3 onwards

[b-dean]

This fixes #102, but there haven't been any commits on master in almost 6 years. Is this maybe abandoned? @tas50 you've made the last several versions of this back in 2017, is it dead?

[GianniBYoung]

Does anyone know if this repo has been moved? The chef supermarket shows new versions (3.0.1) that aren't reflected here.

https://supermarket.chef.io/cookbooks/hostsfile

[b-dean]

@GianniBYoung, there's a tag for 3.0.1
https://github.com/customink-webops/hostsfile/releases/tag/v3.0.1

It's in the CHANGELOG.md too: https://github.com/customink-webops/hostsfile/blob/master/CHANGELOG.md#v301-2017-08-22