qa_crowbarsetup: move tempest cleanup to function
qa_crowbarsetup: move tempest cleanup to function

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