Puppet4

Fixes stuff for puppet 4

See merge request !54

Improve tests

See merge request !53

- Add .fixtures.yaml to checkout common module
- Use puppetlabs-spec-helper in spec_helper.rb

Fix CI, dont install beaker on gitlab CI

- Rename `system_tests` group to `acceptance` in Gemfile
- Don't install `acceptance` group for rspec tests on CI
- Use leapcode/ruby docker image because it has a more default
  ruby installation than the 'official' one.

See merge request !52

- Don't install `system-tests` gem group for rspec tests on CI
- Use leapcode/ruby docker image because it has a more default
  ruby installation than the 'official' one.
- Use `/var/cache/gitlab-runner/` as gem install path so we can
  cache this folder later

Always set debian_nextcodename to 'sid' on systems running testing,

fixes #12

See merge request !49

introduce a simple wrapper, so other modules that work with puppetlabs' module, also work with that one

For jessie and later releases, backports use debian_url.

Bugfix/reboot required jessie

I've mistakenly marked !40 as merged :/

See merge request !46

apt::dist_upgrade: add a timeout parameter (#8).



See merge request !45

Drop apt::cron::download, and turn $apt_cron_hours into a class parameter for ap…

…t::cron::dist_upgrade.

I've introduced apt::cron::download, am not using it anymore, and have
never seen anyone else submit a bug or a merge request for it. Thus,
I feel pretty confident in dropping it.

And this allows me to trivially get rid of the $apt_cron_hours global
variable noticed by LeLutin in #13.

(I've mistakenly marked !44 as merged)

See merge request !47

Remove documentation for apt::cron::download, and document the new parameter to apt::cron::dist_upgrade.

Merge remote-tracking branch 'shared/master' into bugfix/drop-obsolete-code-and-global-variable-in-apt-cron

apt::reboot_required_notify::jessie: explicitly check that $apt::use_backports is true when running Jessie.

Otherwise, it would fail anyway when trying to install reboot-notifier,
but in a way less user-friendly.

Thanks to lavamind for the suggestion!