Update hash syntax and add changelog for the gitlab:db:configure rake task

CHANGELOG

@@ -46,6 +46,7 @@ v 8.8.0
   - Sanitize repo paths in new project error message
   - Bump mail_room to 0.7.0 to fix stuck IDLE connections
   - Remove future dates from contribution calendar graph.
+  - Add rake task 'gitlab:db:configure' for conditionally seeding or migrating the database
   - Support e-mail notifications for comments on project snippets
   - Fix API leak of notes of unauthorized issues, snippets and merge requests
   - Use ActionDispatch Remote IP for Akismet checking

lib/tasks/gitlab/db.rake

@@ -38,8 +38,7 @@ namespace :gitlab do
     end
 
     desc 'Configures the database by running migrate, or by loading the schema and seeding if needed'
-    task :configure => :environment do
-      # Runs migrate if the schema has already been loaded, otherwise loads the schema and seeds
+    task configure: :environment do
       if ActiveRecord::Base.connection.table_exists? 'schema_migrations'
         Rake::Task['db:migrate'].invoke
       else