Use the Github version of "ark" cookbook
Use the @opscode-cookbooks Github repository for "java" cookbook
[VAGRANT] Install `curl` before installing Chef
Fixed handling of plugin-related attributes, Chef 11 compatibility

* Restructured & rewrote the handling of plugin-related configurations
  in attribute and recipe files.

* Fixed an issue where `plugin.mandatory` was not properly propagated to elasticsearch.yml

* The cookbook is now compatible with Chef version 11.4.0
Added automatic installation of Pry in Chef installation provisioner

<https://github.com/pry/pry>