[epic] Enable saving/booting snapshot in PowerVM
As a Quality Engineer I would like to enable mechanism to boot from PowerVM images in similar way that is done for other architectures.
Currently we need to use START_DIRECTLY_AFTER_TEST when some job requires to start after another, because we cannot follow the same process to publish image and boot from it that we currently do for other architectures. In that sense, it is really slow to test anything in those child jobs as the parent needs to run always before.
Therefore it would require:
- Investigation about snapshots in PowerVM.
- Integration with openQA.
Some documentation is available here: https://www.redbooks.ibm.com/redbooks/pdfs/sg247590.pdf page 411 in particular.