Update module name to librarian-puppet format

$ librarian-puppet install
/usr/local/lib/ruby/site_ruby/1.8/puppet/module_tool.rb:37:in `username_and_modname_from': Not a valid full name: sudoers (ArgumentError)

From module_tool.rb:~37
    # Return the +username+ and +modname+ for a given +full_module_name+, or raise an
    # ArgumentError if the argument isn't parseable.

FULL_MODULE_NAME_PATTERN = /\A([^-\/|.]+)[-|\/](.+)\z/