Add a test that refstack folder exists
Add a test that refstack folder exists

This is needed to avoid the fail on the second run

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