Set postgres db owner to confluence user.

* This allows a database to be imported using a more flexible backup,
  taken with the `--no-owner` flag. However, in order for the new
database to work as expected, the database my be owned by the user
expected to interact with it. This way, the table ownership is
automatically set to this db user during import, and this db user can
continue to access later.

recipes/database.rb

@@ -75,6 +75,12 @@
     action :create
   end
 
+  postgresql_database 'set database owner' do
+    connection database_connection
+    sql "ALTER DATABASE #{settings['database']['name']} OWNER TO #{settings['database']['user']}"
+    action :query
+  end
+
   postgresql_database_user settings['database']['user'] do
     connection database_connection
     password settings['database']['password']