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>
The `shell_out` never throws the `Mixlib::ShellOut::ShellCommandFailed` exception on error, whereas the `shell_out!` will raise on non-zero exit code.