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
Switch to looking up the version from a file with a fall back to get
it directly from git tags if the file isn't available.
The version file is automatically generated by a task of building of the
gem and included in the package release to prevent reading from git.
Should allow the release process to be automated from pushing of a git
tag.
