Add latest changes from gitlab-org/gitlab@master

config/environments/development.rb

@@ -49,8 +49,6 @@ Rails.application.configure do
   # Do not log asset requests
   config.assets.quiet = true
 
-  config.allow_concurrency = Gitlab::Runtime.multi_threaded?
-
   # BetterErrors live shell (REPL) on every stack frame
   BetterErrors::Middleware.allow_ip!("127.0.0.1/0")
 

config/environments/production.rb

@@ -77,6 +77,4 @@ Rails.application.configure do
   config.action_mailer.raise_delivery_errors = true
 
   config.eager_load = true
-
-  config.allow_concurrency = Gitlab::Runtime.multi_threaded?
 end

config/environments/test.rb

@@ -54,4 +54,8 @@ Rails.application.configure do
     config.logger = ActiveSupport::TaggedLogging.new(Logger.new(nil))
     config.log_level = :fatal
   end
+
+  # Mount the ActionCable Engine in-app so that we don't have to spawn another Puma
+  # process for feature specs
+  ENV['ACTION_CABLE_IN_APP'] = 'true'
 end