* Return the dns_name of a VM with the special string N correctly replaced.
* TOSCA not correctly managed in case of Relationships with interfaces defined in custom types.
* Fix error returning incorrect error msg in VM creation in OpenStack conn in case of error deleting SG.
* Fix error returning TOSCA function values.
* Enable CORS.
* Fix incorrect contextualizarion in case of using vault password.
* Fix IP public not attached in case of disabled contextualization.