Update project hooks limits to 100 for all plans

We introduced project hook limits of 10/20/30/100 for
Free/Bronze/Silver/Gold tiers. We like to increase the limits to 100 for
all plans.

changelogs/unreleased/update-project-hook-limits-100.yml

+---
+title: Update project hooks limits to 100 for all plans
+merge_request: 22604
+author:
+type: other

db/migrate/20200108100603_update_project_hooks_limit.rb

+# frozen_string_literal: true
+
+class UpdateProjectHooksLimit < ActiveRecord::Migration[5.2]
+  include Gitlab::Database::MigrationHelpers
+
+  DOWNTIME = false
+
+  def up
+    return unless Gitlab.com?
+
+    create_or_update_plan_limit('project_hooks', 'free', 100)
+    create_or_update_plan_limit('project_hooks', 'bronze', 100)
+    create_or_update_plan_limit('project_hooks', 'silver', 100)
+  end
+
+  def down
+    return unless Gitlab.com?
+
+    create_or_update_plan_limit('project_hooks', 'free', 10)
+    create_or_update_plan_limit('project_hooks', 'bronze', 20)
+    create_or_update_plan_limit('project_hooks', 'silver', 30)
+  end
+end

db/schema.rb

@@ -10,7 +10,7 @@
 #
 # It's strongly recommended that you check this file into your version control system.
 
-ActiveRecord::Schema.define(version: 2020_01_06_085831) do
+ActiveRecord::Schema.define(version: 2020_01_08_100603) do
 
   # These are extensions that must be enabled in order to support this database
   enable_extension "pg_trgm"

doc/user/project/integrations/webhooks.md

@@ -56,9 +56,9 @@ tier](https://about.gitlab.com/pricing/), as shown in the following table:
 
 | Tier     | Number of webhooks per project |
 |----------|--------------------------------|
-| Free     | 10                             |
-| Bronze   | 20                             |
-| Silver   | 30                             |
+| Free     | 100                            |
+| Bronze   | 100                            |
+| Silver   | 100                            |
 | Gold     | 100                            |
 
 ## Use-cases