Add 2 retries for downloading the homebrew script in case it fails
Add 2 retries for downloading the homebrew script in case it fails

Signed-off-by: Tim Smith <764ef62106582a09ed09dfa0b6bff7c05fd7d1e4@chef.io>

Brantone/homebrew,serfdom/homebrew,chef-cookbooks/homebrew,opscode-cookbooks/homebrew,jeroenj/homebrew-cookbook