mkcloud: explain why qemu-img convert is taking a long time
mkcloud: explain why qemu-img convert is taking a long time

aspiers/automation,gosipyan/automation,aspiers/automation,SUSE-Cloud/automation,aspiers/automation,gosipyan/automation,aspiers/automation,gosipyan/automation,vmoravec/automation,SUSE-Cloud/automation,vmoravec/automation,SUSE-Cloud/automation,vmoravec/automation,vmoravec/automation,gosipyan/automation,SUSE-Cloud/automation