migration: AddReplicaIdentityForGroups

flag=none
refs VICE-972

TEST PLAN:
- migration works
- tests pass

Change-Id: Iaaa11fee80888b25584fce147380cdf63a3a59fa
Reviewed-on: https://gerrit.instructure.com/c/canvas-lms/+/255214
Tested-by: Service Cloud Jenkins <svc.cloudjenkins@instructure.com>
Reviewed-by: Rob Orton <rob@instructure.com>
QA-Review: Rob Orton <rob@instructure.com>
Product-Review: Rob Orton <rob@instructure.com>

db/migrate/20201215181354_add_replica_identity_for_groups.rb

@@ -0,0 +1,33 @@
+# frozen_string_literal: true
+
+#
+# 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 AddReplicaIdentityForGroups < ActiveRecord::Migration[5.2]
+  tag :postdeploy
+  disable_ddl_transaction!
+
+  def up
+    add_replica_identity 'Group', :root_account_id, 0
+    # no index to remove
+  end
+
+  def down
+    remove_replica_identity 'Group'
+  end
+end
+