Use exit code 1 on YAML lint failure

support/check_yaml.rb

@@ -1,6 +1,7 @@
 require 'yaml'
 
 path = File.expand_path('../members', File.dirname(__FILE__))
+code = 0
 
 Dir.glob(path + '/*.yaml') do |f|
   begin
@@ -10,5 +11,8 @@ Dir.glob(path + '/*.yaml') do |f|
   rescue Exception => e
     puts "Error in file #{f}:"
     puts e.message
+    code = 1
   end
 end
+
+exit code