Add repository_read_only column to groups

changelogs/unreleased/fj-add-repository-read-only-to-groups.yml

+---
+title: Add repository_read_only column to the Namespace table
+merge_request: 51800
+author:
+type: added

db/migrate/20210115084949_add_repository_read_only_to_groups.rb

+# frozen_string_literal: true
+
+class AddRepositoryReadOnlyToGroups < ActiveRecord::Migration[6.0]
+  include Gitlab::Database::MigrationHelpers
+
+  DOWNTIME = false
+
+  def up
+    with_lock_retries do
+      add_column :namespaces, :repository_read_only, :boolean, default: false, null: false
+    end
+  end
+
+  def down
+    with_lock_retries do
+      remove_column :namespaces, :repository_read_only
+    end
+  end
+end

db/schema_migrations/20210115084949

+09766a70e36d4bbd8ecf7f5bba36c865873c1ac71f7eb8de04f70fd2c4da242e
\ No newline at end of file

db/structure.sql

@@ -14309,7 +14309,8 @@ CREATE TABLE namespaces (
     shared_runners_enabled boolean DEFAULT true NOT NULL,
     allow_descendants_override_disabled_shared_runners boolean DEFAULT false NOT NULL,
     traversal_ids integer[] DEFAULT '{}'::integer[] NOT NULL,
-    delayed_project_removal boolean DEFAULT false NOT NULL
+    delayed_project_removal boolean DEFAULT false NOT NULL,
+    repository_read_only boolean DEFAULT false NOT NULL
 );
 
 CREATE SEQUENCE namespaces_id_seq