I am providing a functionality where I can create users with roles [ admin, user ]
As there will be no of users going fall in both the categories and they will also be
able to upload there files using logstash.
Specifying just admin and user roles in roles.yml file will let every admin access
his own and every other admins 'index' similarly a user can also do the same.
Is there way of using REGEX patterns for specifying roles like we do in index names?