Fixes #20: add an extra file for CouchDB to put uuid into

CouchDB will put the `uuid` into the 'last file in the configuration
chain' (see: https://issues.apache.org/jira/browse/COUCHDB-2064). Added
a file that will be last lexicographically (with name in upper case), so
the file managed by Chef won't be touched on every restart.
I've updated the PR according to @kxepal suggestions.