Do not vendor cookbooks using Berkshelf anymore

Instead, use the Berkshelf support in knife-solo and the
vagrant-berkshelf plugin on Vagrant

cookbooks/redis/Rakefile

@@ -1,31 +0,0 @@
-task default: "test"
-
-desc "Run all tests except `kitchen`"
-task test: [:rubocop, :foodcritic, :chefspec]
-
-desc "Run all tests"
-task all_tests: [:rubocop, :foodcritic, :chefspec, "kitchen:all"]
-
-# rubocop style checker
-require "rubocop/rake_task"
-RuboCop::RakeTask.new
-
-# foodcritic chef lint
-require "foodcritic"
-FoodCritic::Rake::LintTask.new do |t|
-  t.options = { fail_tags: ["any"] }
-end
-
-# chefspec unit tests
-require "rspec/core/rake_task"
-RSpec::Core::RakeTask.new(:chefspec) do |t|
-  t.rspec_opts = "--color --format progress"
-end
-
-# test-kitchen integration tests
-begin
-  require "kitchen/rake_tasks"
-  Kitchen::RakeTasks.new
-rescue LoadError
-  task("kitchen:all") { puts "Unable to run `test-kitchen`" }
-end