7e7aa529d9
Keeping the VM state test across several run sometimes lead to subtle and hard to spot errors in practice. We delete the VM state which contains (among other things) the qcow volume. We also introduce a -K (--keep-vm-state) flag making VM state to persist after the test run. This flag makes test-driver.py to match its previous behaviour.
*** NixOS *** NixOS is a Linux distribution based on the purely functional package management system Nix. More information can be found at https://nixos.org/nixos and in the manual in doc/manual.