Updating instructions on pinning version of `cryptography` & some clean-up
Updating instructions on pinning version of `cryptography` & some clean-up

Signed-off-by: David Comay <825b985bc87da53c27c4bff6aff305c3cb513d5f@bloomberg.net>

bloomberg/chef-bcpc,bloomberg/chef-bcpc,bloomberg/chef-bcpc,bloomberg/chef-bcpc