-# == Class: apt
-#
-# This module manages the initial configuration of apt.
-#
-# The parameters listed here are not required in general and were
-# added for use cases related to development environments.
-#
-# === Parameters
-#
-# [*disable_keys*]
-# Disables the requirement for all packages to be signed
-#
-# [*always_apt_update*]
-# Rather apt should be updated on every run (intended
-# for development environments where package updates are frequent)
-#
-# [*apt_update_frequency*]
-# String: Supported values:
-# **always**: Will fire `apt-get update` at every puppet run. Intended to
-# deprecate the `always_apt_update` parameter.
-# *daily**: Trigger `apt-get update` if the value of the fact
-# `apt_update_last_success` is less than current epoch time - 86400.
-# *notifying the apt_update exec will trigger apt-get update regardless*
-# *weekly**: Trigger `apt-get update` if the value of the fact
-# `apt_update_last_success` is less than current epoch time - 604800.
-# *notifying the apt_update exec will trigger apt-get update regardless*
-# *reluctantly**: *Default* only run apt-get update if the exec resource `apt_update` is notified.
-#
-# [*purge_sources_list*]
-# Accepts true or false. Defaults to false If set to
-# true, Puppet will purge all unmanaged entries from sources.list
-#
-# [*purge_sources_list_d*]
-# Accepts true or false. Defaults to false. If set
-# to true, Puppet will purge all unmanaged entries from sources.list.d
-#
-# [*update_timeout*]
-# Overrides the exec timeout in seconds for apt-get update.
-# If not set defaults to Exec's default (300)
-#
-# [*update_tries*]
-# Number of times that `apt-get update` will be tried. Use this
-# to work around transient DNS and HTTP errors. By default, the command
-# will only be run once.
-#
-# === Examples
-#
-# class { 'apt': }
-#
-# === Requires
-#
-# puppetlabs/stdlib >= 2.2.1