[COOK-1087] Update the CONTRIBUTING file to fix a minor typo
Preparing repository for splitting cookbooks into their own repos.
* Add a CONTRIBUTING file to each cookbook.
* Move the Changes/Roadmap section(s) to CHANGELOG.md.
* Create the Apache LICENSE file in each cookbook.
fixed COOK-787, template and attributes reflect tftp directory as an …
create the tftp directory, per COOK-787