make pseudonymizer_enable application setting true by default

db/schema.rb

@@ -206,7 +206,7 @@ ActiveRecord::Schema.define(version: 20180612175636) do
     t.string "encrypted_external_auth_client_key_pass_iv"
     t.string "email_additional_text"
     t.boolean "enforce_terms", default: false
-    t.boolean "pseudonymizer_enabled", default: false, null: false
+    t.boolean "pseudonymizer_enabled", default: true, null: false
   end
 
   create_table "approvals", force: :cascade do |t|

ee/app/models/ee/application_setting.rb

@@ -101,7 +101,7 @@ module EE
           slack_app_id: nil,
           slack_app_secret: nil,
           slack_app_verification_token: nil,
-          pseudonymizer_enabled: Settings.pseudonymizer['enabled']
+          pseudonymizer_enabled: true
         )
       end
     end

ee/db/migrate/20180531221734_add_pseudonymizer_enabled_to_application_settings.rb

@@ -26,6 +26,6 @@ class AddPseudonymizerEnabledToApplicationSettings < ActiveRecord::Migration
   # disable_ddl_transaction!
 
   def change
-    add_column :application_settings, :pseudonymizer_enabled, :boolean, null: false, default: false
+    add_column :application_settings, :pseudonymizer_enabled, :boolean, null: false, default: true
   end
 end