Berkshelf treats 'recommends' as 'depends'

[sarkis]

When attempting to upload a wrapper cookbook, I get the following error:

Dependency 'build-essential' was not found. Please make sure it is in your Berksfile, and then run berks install to download and install the missing dependencies.

Upon further investigation, it seems Berkshelf needs the following line to be a depends instead of recommends:

https://github.com/elasticsearch/cookbook-elasticsearch/blob/master/metadata.rb#L12

Any objections to getting this into upstream? I can send over a PR.

[martinb3]

Hello! We've re-written the cookbook using libraries that expose resources and providers, so you shouldn't see this problem on the newer version. Hope this helps!