Rename barclamp variables and functions nova_dashboard to horizon
Rename barclamp variables and functions nova_dashboard to horizon

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