Upgrade the machine to packages and nothing more (#322)
Upgrade the machine to packages and nothing more (#322)

* Only upgrade the machine to packages.

And remove the current upgrade mechanism.

* Fix when install scionlab.

Call install, not upgrade.
Prepare the configuration for the new scionlab-config to find, as it will
be called as part of the installation.

* Fix crontab call to upgrade -y

* Fix bug disabling upgrade service

* WIP: fixes to the upgrade script

* Update user ASes to packaging system

* apt-get install --only-upgrade scionlab

* List our repository inside /etc/apt/sources.list.d/

* Remove ZK. Also use systemctl disable --now

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