Racktables: Split off source install.

Updates metadata description as well as list recipes.
Merge branch 'master' into racktables-add-source-recipe
Racktables: Bump version to 0.1.1
Racktables: Remove non-node 'variables'.

These are: app_name, app_config, src_filename, and extract_path.
Racktables: Split out server config from source.
Racktables: 0.1.2

* Add template for 'secret.php' and attributes for db_username,
  db_passwords, and db_name.
* Change vhost to use a racktables log directory, and ensure the
  directory exists.
* Updated README with attribute list and default.
Racktables: Bump to 0.2.0

* Changed a large amount of attributes.
* Re-ordered recipes
* Added 'secret.php' template
Merge branch 'master' into racktables-add-source-recipe
Merge pull request #3 from osuosl/racktables-add-source-recipe

Racktables: 0.2.0