stub out `db:structure:dump` since it breaks Rails 3.2's `db:structure:load`
stub out `db:structure:dump` since it breaks Rails 3.2's
`db:structure:load`

We also don't need to dump the structure for tests

makifund/heroku-buildpack-ruby,makifund/heroku-buildpack-ruby,orenyk/heroku-buildpack-ruby,mattmanning/heroku-buildpack-ruby-jekyll,heroku/heroku-buildpack-ruby,jonseaberg/heroku-buildpack-turbo-sprockets,Genius/heroku-buildpack-ruby,ericboehs/heroku-buildpack-ruby,Scalingo/ruby-buildpack,Genius/heroku-buildpack-ruby,donnykurnia/heroku-buildpack-ruby,brightbytes/heroku-buildpack-ruby-without-assets-precompile,ruby/heroku-buildpack-www-ruby-lang,orenyk/heroku-buildpack-ruby,heroku/heroku-buildpack-ruby,andycroll/heroku-buildpack-jekyll,zunda/heroku-buildpack-ruby,Scalingo/ruby-buildpack,pkgr/heroku-buildpack-ruby,instacart/heroku-buildpack-ruby,pilotcreative/heroku-buildpack-ruby,donnykurnia/heroku-buildpack-ruby,ericboehs/heroku-buildpack-ruby,instacart/heroku-buildpack-ruby,mattmanning/heroku-buildpack-ruby-jekyll,zunda/heroku-buildpack-ruby,pilotcreative/heroku-buildpack-ruby,pkgr/heroku-buildpack-ruby,andycroll/heroku-buildpack-jekyll,jonseaberg/heroku-buildpack-turbo-sprockets,brightbytes/heroku-buildpack-ruby-without-assets-precompile