atomic_write: create path before writing file

scripts/utils.rb

@@ -19,6 +19,10 @@ class Registry
 end
 
 def atomic_write(path, content)
+  dir = File.dirname(path)
+  unless Dir.exist?(dir)
+    FileUtils.mkdir_p(dir)
+  end
   temp_path = path.to_s + ".tmp"
   File.open(temp_path, 'w+') do |f|
     f.write(content)