Disable api auth as there is no Spree api key set

Although Spree::Api::Config[:requires_authentication] is set to false by
default for some unknown reason if not done explicitly Spree still
returns it as false.

This amends the change done in a87c89c83d,
which introduced the bug. As there is no Spree api key set the auth
fails when getting taxons.

config/initializers/spree.rb

@@ -12,7 +12,7 @@ require 'spree/core/calculated_adjustments_decorator'
 require "#{Rails.root}/app/models/spree/payment_method_decorator"
 require "#{Rails.root}/app/models/spree/gateway_decorator"
 
-Spree::Api::Config[:requires_authentication] = true
+Spree::Api::Config[:requires_authentication] = false
 
 Spree.config do |config|
   config.shipping_instructions = true

spec/controllers/spree/api/products_controller_spec.rb

@@ -15,8 +15,7 @@ module Spree
     let(:attributes) { [:id, :name, :supplier, :price, :on_hand, :available_on, :permalink_live] }
 
     before do
-      stub_authentication!
-      Spree.user_class.stub :find_by_spree_api_key => current_api_user
+      allow(controller).to receive(:spree_current_user) { current_api_user }
     end
 
     context "as a normal user" do
@@ -109,14 +108,11 @@ module Spree
     end
 
     describe '#clone' do
-      before do
-        spree_post :clone, product_id: product1.id, format: :json
-      end
-
       context 'as a normal user' do
         sign_in_as_user!
 
         it 'denies access' do
+          spree_post :clone, product_id: product1.id, format: :json
           assert_unauthorized!
         end
       end
@@ -125,10 +121,12 @@ module Spree
         sign_in_as_enterprise_user! [:supplier]
 
         it 'responds with a successful response' do
+          spree_post :clone, product_id: product1.id, format: :json
           expect(response.status).to eq(201)
         end
 
         it 'clones the product' do
+          spree_post :clone, product_id: product1.id, format: :json
           expect(json_response['name']).to eq("COPY OF #{product1.name}")
         end
       end
@@ -137,10 +135,12 @@ module Spree
         sign_in_as_admin!
 
         it 'responds with a successful response' do
+          spree_post :clone, product_id: product1.id, format: :json
           expect(response.status).to eq(201)
         end
 
         it 'clones the product' do
+          spree_post :clone, product_id: product1.id, format: :json
           expect(json_response['name']).to eq("COPY OF #{product1.name}")
         end
       end