The `disable_update` parameter has been removed. The main apt class
defaults to *not* run an `apt-get update` on every run anyway so
this parameter seems useless.
You can include the `apt::update` class if you want it to be
run every time.
Move this Exec to a dedicated class that is not included by default i.e. we
default not to "apt-get update" on every Puppet run.
We now make use of this class in the apt::upgrade_package define to make sure
APT indexes are up-to-date before attempting package upgrades.
One may now use the following to ensure current packages are installed by
Package resources:
include apt::update
Package { require => Exec[apt_updated] }
... because Exec[update_apt] is currently never run since we set it refreshonly.
Better solutions are being thought of, but in the meantime the least we can do
is somehow repair apt::upgrade_package.
