If the role or attribute is empty (i.e. no server provides the role or
the caller has no read access to the required information) do not
return empty attributes. This is consistent with other behavior
displayed by optional multivalued Params.
https://pagure.io/freeipa/issue/7029
Reviewed-By: Martin Basti <mbasti@redhat.com>
In order to achieve the task, the following changes were required:
* vectorize the base class for server attributes
* add a child class that enforces single-value attributes. It still
accepts/returns single-value lists in order to not break Liskov
substitution principle
* Existing attributes inherit from the child class
https://pagure.io/freeipa/issue/6937
Reviewed-By: Jan Cholasta <jcholast@redhat.com>
Reviewed-By: Stanislav Laznicka <slaznick@redhat.com>
If a server attribute such as DNSSec Key master is unset, None is passed as
the attribute value into the upper API layers and displayed in the output of
`dnsconfig-show` et al. We should not show this and leave the attribute empty
instead.
https://fedorahosted.org/freeipa/ticket/5960
Reviewed-By: Pavel Vomacka <pvomacka@redhat.com>
Reviewed-By: Martin Basti <mbasti@redhat.com>
