Updated apt-mirror distro support

Hi Apt Mirror Maintainers,

We’ve updated the default list of target distros for the mirror list. If you’re maintaining a mirror using the defaults we recommend that you update. The changes are in these two PRs:

https://github.com/ros-infrastructure/mirror/pull/8

https://github.com/ros-infrastructure/mirror/pull/6

I’ve also turned on unattended upgrades by default.

https://github.com/ros-infrastructure/mirror/pull/9

If you are not running the mirror as standalone application you may want to turn the reboot option to false.

To bring in the changes if you have the default installation. You can just do:

cd ~/mirror
git pull
sudo puppet module install puppet-unattended_upgrades
sudo puppet apply ros_mirror.pp --modulepath=/etc/puppet/modules:/usr/share/puppet/modules:.

And it will pull the new versions in the next nightly run.