Add frozen_string_literal to EE files now in CE

config/initializers/0_license.rb

@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 Gitlab.ee do
   begin
     public_key_file = File.read(Rails.root.join(".license_encryption_key.pub"))

config/initializers/elastic_client_setup.rb

@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 # Be sure to restart your server when you modify this file.
 
 require 'gitlab/current_settings'

config/initializers/geo.rb

@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 Gitlab.ee do
   if File.exist?(Rails.root.join('config/database_geo.yml'))
     Rails.application.configure do

config/initializers/load_balancing.rb

@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 # We need to run this initializer after migrations are done so it doesn't fail on CI
 
 Gitlab.ee do

config/initializers/sidekiq_cluster.rb

@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 if ENV['ENABLE_SIDEKIQ_CLUSTER'] && Gitlab.ee?
   Thread.new do
     Thread.current.abort_on_exception = true