avocado.virt update

Signed-off-by: Lucas Meneghel Rodrigues <lmr@redhat.com>
avocado.virt update

Signed-off-by: Lucas Meneghel Rodrigues <lmr@redhat.com>
avocado: more fixes
avocado.virt: Introduce test class
avocado: Add experimental qemu test
avocado: More fixes

Signed-off-by: Lucas Meneghel Rodrigues <lmr@redhat.com>