Use SLE12 for neutron-server when want_sles12_controller is set
Use SLE12 for neutron-server when want_sles12_controller is set

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