Stop billing requsts on org domain

Author: shairyar

lib/travis/api/enqueue/services/restart_model.rb

@@ -31,6 +31,9 @@ def accept?
         end
 
         def billing?
+          # there is no billing for .org
+          return true if ENV["TRAVIS_SITE"] == 'org'
+
           @_billing_ok ||= begin
             jobs = target.is_a?(Job) ? [target] : target.matrix
 

spec/lib/travis/api/enqueue/services/restart_model_spec.rb

@@ -10,6 +10,7 @@
   before do
     Travis.config.billing.url = 'http://localhost:9292/'
     Travis.config.billing.auth_key = 'secret'
+    ENV['TRAVIS_SITE'] = 'com'
   end
 
   after do