Reload ApplicationSetting column information before use

It seemed `check_namespace_plan?` column is not detected in migration.
This happens when all migrations are run from scratch.
One possible cause is that `ApplicationSetting` is used prior
to 20170512173638, thus the column in memory does not contain
`check_namespace_plan?`.

This has been the behavior for Rails
https://github.com/rails/rails/issues/6939

ee/db/migrate/20190114040405_consume_remaining_migrate_approver_to_approval_rules_in_batch_jobs.rb

@@ -35,6 +35,8 @@ class ConsumeRemainingMigrateApproverToApprovalRulesInBatchJobs < ActiveRecord::
   disable_ddl_transaction!
 
   def up
+    ApplicationSetting.reset_column_information
+
     Gitlab::BackgroundMigration.steal('MigrateApproverToApprovalRulesInBatch', retry_dead_jobs: true)
 
     process_unmigrated