Merge branch 'fix-settings-spec' into 'master'

Fix settings_spec so that it can that run by itself

Running `spec/settings_spec.rb` would fail because it would attempt to load `1_settings.rb`, which would reference `Rails`. This constant was not loaded without `spec_helper.rb`.


See merge request !4893

spec/initializers/settings_spec.rb

+require 'spec_helper'
 require_relative '../../config/initializers/1_settings'
 describe Settings, lib: true do