Ansible playbooks to migrate OONI data-pipeline

Includes the playbooks needed to migrate OONI data-pipeline containers and
configuration to a remote server.
Reference: trac-13825
it's true that on the current VM we have a 3.2 series kernel, but I had to install that specific version and any other version did not work. The reason why I did not install a newer one was that greenhost did not support it, so I went for that, though I ran into a few bugs when using it.