Add ExceptionNotifier to multicoops:run task

lib/tasks/multicoops.rake

@@ -7,10 +7,17 @@ namespace :multicoops do
   desc 'Runs a specific rake task for each registered foodcoop, use rake multicoops:run TASK=db:migrate'
   task :run => :environment do
     task_to_run = ENV['TASK']
+    last_error = nil
     FoodsoftConfig.each_coop do |coop|
-      rake_say "Run '#{task_to_run}' for #{coop}"
-      Rake::Task[task_to_run].execute
+      begin
+        rake_say "Run '#{task_to_run}' for #{coop}"
+        Rake::Task[task_to_run].execute
+      rescue => error
+        last_error = error
+        ExceptionNotifier.notify_exception(error, data: {foodcoop: coop})
+      end
     end
+    raise last_error if last_error
   end
 
   desc 'Runs a specific rake task for a single coop, use rake mutlicoops:run_single TASK=db:migrate FOODCOOP=demo'