Add subgroup_events column to web_hooks table

This change adds new column named
`subgroup_events` to `web_hooks` table.

changelogs/unreleased/260419-add-subgroup-events-column-to-webhooks-table.yml

+---
+title: Add subgroup_events column to web_hooks table
+merge_request: 52648
+author:
+type: added

db/migrate/20210127052226_add_subgroup_events_to_web_hooks.rb

+# frozen_string_literal: true
+
+class AddSubgroupEventsToWebHooks < ActiveRecord::Migration[6.0]
+  DOWNTIME = false
+
+  def change
+    add_column :web_hooks, :subgroup_events, :boolean, null: false, default: false
+  end
+end

db/schema_migrations/20210127052226

+e978687e9b27db5288862ea85053f3fc04a8e841702b16ca17c01398a86654d0
\ No newline at end of file

db/structure.sql

@@ -18240,7 +18240,8 @@ CREATE TABLE web_hooks (
     deployment_events boolean DEFAULT false NOT NULL,
     releases_events boolean DEFAULT false NOT NULL,
     feature_flag_events boolean DEFAULT false NOT NULL,
-    member_events boolean DEFAULT false NOT NULL
+    member_events boolean DEFAULT false NOT NULL,
+    subgroup_events boolean DEFAULT false NOT NULL
 );
 
 CREATE SEQUENCE web_hooks_id_seq