Allows to spin up vagrant boxes via vagrant-libvirt in CI replacing the
need for vagrant-libvirt-qa to be executed separately before/after
releases.
* Adds a github integration tests workflow
* Installs the needed toolset in separate groups for easier tracking
* Add Vagrantfile definitions for the first simple test cases in tests/
using tinycore linux, using the installed master version these boxes
are spun up and destroyed via a test matrix.
Should help reduce effort for new maintainers to help with #1069