Add runner db field for ability to run untagged jobs

db/migrate/20160504112519_add_run_untagged_to_ci_runner.rb

+class AddRunUntaggedToCiRunner < ActiveRecord::Migration
+  ##
+  # Downtime expected!
+  #
+  # This migration will cause downtime due to exclusive lock
+  # caused by the default value.
+  #
+  def change
+    add_column :ci_runners, :run_untagged, :boolean, default: true
+  end
+end

db/schema.rb

@@ -269,6 +269,7 @@ ActiveRecord::Schema.define(version: 20160509201028) do
     t.string   "revision"
     t.string   "platform"
     t.string   "architecture"
+    t.boolean  "run_untagged", default: true
   end
 
   add_index "ci_runners", ["description"], name: "index_ci_runners_on_description_trigram", using: :gin, opclasses: {"description"=>"gin_trgm_ops"}