small initial commit.  add user creation to prod playbook, but makes user

var empty, so no actual users are created
Moving previous secure directory to secure_default directory.

Also changed top level playbook ymlv var search to follow a path, first
over {{ secure_file_dir }} set in group_vars/all then at
vars/secure_default
move private repo location out from under this repo
Merge pull request #17 from edx/feature/jbau/env_parameterizaton

Feature/jbau/env parameterizaton