Transfer trusted certs during bootstrap
add trusted_certs_dir to generated config
Use :trusted_certs_dir from Chef::Config, only grab .crt and .pem files
Fetch certs in bootstrap_context.rb, not in templates to avoid copypasta.
Look for certs only if :trusted_certs_dir is not nil
Stub reading of validation key
reliably stub cert transfer tests
Update for trusted cert transfer during bootstrap.
Fix typo
Merge pull request #2003 from opscode/mcquin/transfer_trusted_certs

Mcquin/transfer trusted certs