Fix an ommitted fields 500 error
Fix an ommitted fields 500 error

If organization or notification_template is omitted entirely from the
POST for a new item then a 500 error would be raised

snahelou/awx,wwitzel3/awx,snahelou/awx,wwitzel3/awx,wwitzel3/awx,snahelou/awx,snahelou/awx,wwitzel3/awx