This is replaced by usage of the ai3/docker/float-runner Docker image,
which has its own "with-ssh-key" wrapper.

Vagrant is currently downloading the boxes on every test execution,
which wastes time and bandwidth.

Necessary for libvirt remote environments, where we don't have direct
access to the test IP network.

This should allow us to run multiple tests in parallel on the same
virtual host environment.

mariadb: write data directory sentinel file

See merge request !75

base: more aggressive mtail fifo retry

See merge request !74

More robust in case mysql_install_db fails but creates the directory.

Note this will require to manually create the sentinel file for data
directories already bootstrapped.

rsyslog max retry can be up to two minutes by default

base: force older mtail version on buster

See merge request !73

Allows for customizing the resulting NGINX configuration to suit
particular requirements that aren't easily handled by the backend
application.

It's weird to have a special case for it, and it is simpler to invoke
"float run init-credentials", which at least makes it clear that it's
just a playbook.

base: enable tabacco cache

See merge request !72

base: ship tabacco-agent service with Debian package

See merge request !71

prometheus: alert on backup failure

See merge request !70

Gracefully handle restart of tabacco during package upgrades.

Add checks to verify that the plugin has been loaded

See merge request !68