[chef] Chef 12.5 and ChefDK 0.9 release candidates available!

[John Keiser < >]

Hey everyone!

We'd like to ship Chef 12.5 and ChefDK 0.9 soon with a slew of new features, and we'd like to get some feedback on them before we go live. 

Read up on the features and download here: https://www.chef.io/blog/chef-12-5-and-chefdk-0-9-prerelease-announcement/

Here's what you can do:

- Try out the new policy and custom resource features on ChefDK 0.9!

- Run the Chef 12.5 client against your cookbooks to make sure the new release works for you!

We've already gone through a ton of testing with this release, but we can't make it great without you :)

Thanks!

--John