Add ruby script for testing user password syncing. PL-11239.
user
```ruby
module RandomStringHelper
    
  def random_string(size = 8)
    chars = (('a'..'z').to_a + ('0'..'9').to_a) - %w(i o 0 1 l 0)
    (1..size).collect{|a| chars[rand(chars.size)] }.join
  end

end
```
assistant