In #103 we will allow arbitrary users to use a service, in this case we may want to restrict the type of operation (initiate vs accept) that such users can ask the gss-proxy for.
This is to prevent unlikely, but not unthinkable, attempts at impersonating a service by having indirect access to the defined keytab in a MITM attack.
Pushed to master, will be in 0.3.0
Metadata Update from @simo: - Issue assigned to simo