qa_openstack.sh: Test with horizon enabled
qa_openstack.sh: Test with horizon enabled

There are always countless bugs in the Horizon integration,
so better start testing it.

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