[chef] chef-runner v0.5.0

[Mathias Lafeldt < >]

Ohai Chefs!

I just released chef-runner version 0.5.0.

https://github.com/mlafeldt/chef-runner/releases/tag/v0.5.0

This release brings a couple of improvements to how cookbook
dependencies are resolved, making it possible to use chef-runner as a
"general purpose Chef provisioner" outside of a cookbook directory.
(Thanks to @guilhem for the idea!)

For this, chef-runner now follows these rules:

* If the current directory contains a `Berksfile`, Berkshelf is used
to manage cookbooks.

* If the current directory contains a `Cheffile`, Librarian-Chef is
used to manage cookbooks.

* If the current directory is a cookbook with a `metadata.rb` file
that defines the cookbook's name, only this cookbook is copied to the
right place.

* The same is done when dependencies have already been resolved with
Berkshelf or Librarian-Chef to reduce overall provisioning time.

* `metadata.rb` is only required when defining recipes in a format
other than `cookbook::recipe`. The standard syntax `cookbook::recipe`
should always work.

* chef-runner fails if no cookbooks can be found.

Other improvements:

* Configure Chef to verify all HTTPS connections. This removes the SSL
warning message printed at the start of every Chef run. (Internally,
`ssl_verify_mode` is set to `:verify_peer`, which is going to be the
new default someday.)

* Add `script/coverage` to generate code coverage statistics for Go packages.

* Test dependency handling and provisioning more thoughtfully.

* Log most executed commands when log level is set to debug.

* Improve many parts of the README.

* Add Go documentation to some packages.


I would love to get some feedback on the new release and how I can
further improve chef-runner to make it more useful. Simply leave a
reply here or reach out to me on Twitter (I'm @mlafeldt). Thanks!

-Mathias