# = Class: ntp
    #
    # This class installs/configures/manages NTP. It can optionally disable NTP
    # on virtual machines. Only supported on Debian-derived and Red Hat-derived OSes.
    #
    # == Parameters:
    #
    # $servers:: An array of NTP servers, with or without +iburst+ and
    #            +dynamic+ statements appended. Defaults to the OS's defaults.
    # $enable::  Whether to start the NTP service on boot. Defaults to true. Valid
    #            values: true and false.
    # $ensure::  Whether to run the NTP service. Defaults to running. Valid values:
    #            running and stopped.
    #
    # == Requires:
    #
    # Nothing.
    #
    # == Sample Usage:
    #
    #   class {'ntp':
    #     servers => [ "ntp1.example.com dynamic",
    #                  "ntp2.example.com dynamic", ],
    #   }
    #   class {'ntp':
    #     enable => false,
    #     ensure => stopped,
    #   }
    #