NMDDRU-4

@rickmanelius We don't want to set a default site to load when somebody uses the drupal recipe. If we did this then anytime someone used the recipe a default site would be present unless they otherwise unset it. The alternative is that we don't attempt to set any default site attributes (ln 10-21 of deploy.rb). I believe this would be a mistake because of the level of difficulty of getting a site up and running is greatly reduced by the setting of reasonable site definition defaults.

@cyberswat "The default attributes should handle everything that is necessary and if we need to start customizing it should be something that starts moving towards databags or roles." I found this article a good resource http://www.getchef.com/blog/2014/01/23/attributes-or-data-bags-what-should-i-use/ I believe the site definition does belong in a role, but I also belive we can use the defaults in the recipe to help simplify the site definition process by setting reasonable defaults.