Do not remove PPA sources.list.d files if purge is enabled

[Programie]

As described in #1064, if enabling purge for sources.list.d, files created by add-apt-repository executed by apt::ppa are removed and re-added on the next Puppet run.

This PR should fix that issue by adding a file resource for the sources.list.d file created by add-apt-repository.

[CLAassistant]

All committers have signed the CLA.

[puppet-community-rangefinder]

apt::ppa is a type

Breaking changes to this file WILL impact these 68 modules (exact match):

• garethr-pypy
• rfletcher-ec2_consistent_snapshot
• Aethylred-ck
• garethr-rustlang
• bltavares-baseline
• andschwa-mumble
• elithrar-golang
• adcade-java7
• garethr-mirageos
• tracywebtech-java
• wemakecustom-composer
• a2tar-nodejs
• meeh-java
• a2tar-redis
• garethr-golang
• guimaluf-gvpe
• aageyev-redis
• m3del-sabnzbd
• devsec-suricata
• justintw-develop_environment
• aageyev-nodejs
• praekeltfoundation-webupd8_oracle_java
• cpick-hub
• ngiger-x2go
• dowlingw-kodi
• dowlingw-nvidia
• igovua-nodejs
• a2labs-nginx
• justintw-developer_environment
• driebit-zotonic
• tsuru-tsuru
• praekeltfoundation-gluster
• monkygames-landscape
• praekeltfoundation-consular
• johnlawerance-crucible
• abaranov-wireguard
• shoekstra-owncloud
• monkygames-nvidia
• spantree-java8
• spantree-java7
• nrvale0-keepass2
• cmantix-nginxphp
• petems-cockpit
• TubeMogul-druid
• darkmantle-java
• csanchez-ninjablocks
• opstudio-duplicity
• ncorrare-yubikey
• rendhalver-icinga
• edestecd-software
• puppet-facette
• rehan-git
• dsestero-java
• cesnet-java_ng
• CraigWatson1987-transmission
• CraigWatson1987-bitcoind
• arioch-redis
• puppet-mumble
• rehan-nginx
• puppet-rsyslog
• puppet-php
• factorit-jasperreports_server
• tsuru-base
• signalfx-collectd
• badquanta-badstation
• abstractit-icinga
• jcalles-php
• mayflower-php

Breaking changes to this file MAY impact these 10 modules (near match):

• belskiiartem-logcourier
• hackerhorse-puppet_deluge
• eyp-php
• tedivm-hieratic
• nibalizer-zfs
• puppet-borg
• opendaylight-opendaylight
• puppet-redis
• camptocamp-fprint
• eyp-nrpe

This module is declared in 234 of 579 indexed public Puppetfiles.

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These results were generated with Rangefinder, a tool that helps predict the downstream impact of breaking changes to elements used in Puppet modules. You can run this on the command line to get a full report.

Exact matches are those that we can positively identify via namespace and the declaring modules' metadata. Non-namespaced items, such as Puppet 3.x functions, will always be reported as near matches only.

[GSPatton]

looks good