add root_account_ids to learning_outcomes

refs OUT-3641
flag=none

Change-Id: If12ee39e323e0f7b36f403595f66af1176de229d
Reviewed-on: https://gerrit.instructure.com/c/canvas-lms/+/240474
Reviewed-by: Cody Cutrer <cody@instructure.com>
QA-Review: Cody Cutrer <cody@instructure.com>
Product-Review: Cody Cutrer <cody@instructure.com>
Tested-by: Service Cloud Jenkins <svc.cloudjenkins@instructure.com>

db/migrate/20200608172853_add_root_account_ids_to_learning_outcomes.rb

@@ -0,0 +1,26 @@
+#
+# Copyright (C) 2020 - present Instructure, Inc.
+#
+# This file is part of Canvas.
+#
+# Canvas is free software: you can redistribute it and/or modify it under
+# the terms of the GNU Affero General Public License as published by the Free
+# Software Foundation, version 3 of the License.
+#
+# Canvas is distributed in the hope that it will be useful, but WITHOUT ANY
+# WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR
+# A PARTICULAR PURPOSE. See the GNU Affero General Public License for more
+# details.
+#
+# You should have received a copy of the GNU Affero General Public License along
+# with this program. If not, see <http://www.gnu.org/licenses/>.
+
+class AddRootAccountIdsToLearningOutcomes < ActiveRecord::Migration[5.2]
+  tag :predeploy
+
+  disable_ddl_transaction!
+
+  def change
+    add_column :learning_outcomes, :root_account_ids, :bigint, array: true, if_not_exists: true
+  end
+end