add ability to fetch recipes like in chef-solo when using local-mode

When using local-mode sometimes good to able to fetch recipes tarball,
like chef-solo.

Signed-off-by: Vasiliy Tolstov <v.tolstov@selfip.ru>
You should just be using `Chef::Config[:chef_repo_path]` rather than duplicating the identical logic:

https://github.com/opscode/chef/blob/master/lib/chef/config.rb#L111-L128