Comment 5 for bug 1442572

Found that on 8.0 cloud-init is installed again, because of this commit:
https://github.com/openstack/fuel-library/commit/b78251b26984ddaca211f973ec4c2f88eafe992b

On 7.0 it was
/var/log/apt/history.log
Start-Date: 2015-10-05 22:24:32
Commandline: /usr/bin/apt-get -y -q remove --purge cloud-init
Purge: cloud-init:amd64 (0.7.5-0ubuntu1.12)
End-Date: 2015-10-05 22:24:32

On 8.0
/var/log/apt/history.log
Start-Date: 2016-03-16 13:59:51
Commandline: /usr/bin/apt-get -y -q remove cloud-init
Remove: cloud-init:amd64 (0.7.5-0ubuntu1.17)
End-Date: 2016-03-16 13:59:52

So on 8.0 cloud-init is actually present:
dpkg -L cloud-init
/etc
/etc/rsyslog.d
/etc/rsyslog.d/21-cloudinit.conf
/etc/profile.d
/etc/profile.d/Z99-cloud-locale-test.sh
/etc/init
/etc/init/cloud-init-local.conf
/etc/init/cloud-final.conf
/etc/init/cloud-init.conf
/etc/init/cloud-log-shutdown.conf
/etc/init/cloud-init-nonet.conf
/etc/init/cloud-config.conf
/etc/init/cloud-init-container.conf
...

And nodes are waiting for it on reboot... And if there is a metadata server in the network it may response with the script and, e.g. wipe disks on the node)