Disable invalid service templates (again)

changelogs/unreleased/30024-owner-can-t-initialize-git-repo-for-new-project-in-group.yml

+---
+title: Disable invalid service templates
+merge_request:
+author:

db/migrate/20170330141723_disable_invalid_service_templates2.rb

+# This is the same as DisableInvalidServiceTemplates. Later migrations may have
+# inadventently enabled some invalid templates again.
+#
+class DisableInvalidServiceTemplates2 < ActiveRecord::Migration
+  DOWNTIME = false
+
+  unless defined?(Service)
+    class Service < ActiveRecord::Base
+      self.inheritance_column = nil
+    end
+  end
+
+  def up
+    Service.where(template: true, active: true).each do |template|
+      template.update(active: false) unless template.valid?
+    end
+  end
+end