Add support directory to rubocop inspection list

Rakefile

@@ -6,5 +6,5 @@ Knapsack.load_tasks
 require 'rubocop/rake_task'
 RuboCop::RakeTask.new(:rubocop) do |t|
-  t.options = ['-D', 'config', 'lib', 'spec', 'files/gitlab-ctl-commands', 'files/gitlab-cookbooks/gitlab-ee', 'files/gitlab-cookbooks/runit']
+  t.options = ['-D', 'config', 'lib', 'spec', 'support', 'files/gitlab-ctl-commands', 'files/gitlab-cookbooks/gitlab-ee', 'files/gitlab-cookbooks/runit']
 end