Change vagrant user to arteria
Change vagrant user to arteria

- Sisyphus role is still using vagrant as arteria_user. Change to arteria.
- This has the effect of all services failing, since the owner of the log dir becomes vagrant

johandahlberg/arteria-provisioning,johanherman/arteria-provisioning,arteria-project/arteria-provisioning,johandahlberg/arteria-provisioning,arteria-project/arteria-provisioning,withrocks/arteria-provisioning,arteria-project/arteria-provisioning,johanherman/arteria-provisioning,johanherman/arteria-provisioning,withrocks/arteria-provisioning,johandahlberg/arteria-provisioning,withrocks/arteria-provisioning