Add name to metadata

Resolves the following Foodcritic rules:

* FC045: Consider setting cookbook name in metadata
* FC007: Ensure recipe dependencies are reflected in cookbook metadata

metadata.rb

@@ -1,6 +1,7 @@
 maintainer       "Promet Solutions"
 maintainer_email "marius@promethost.com"
 license          "Apache 2.0"
+name             "drupal"
 description      "Installs/Configures drupal"
 long_description IO.read(File.join(File.dirname(__FILE__), 'README.md'))
 version          "1.1.1"