This results in the proper message being shown if the client sends
an option the server doesn't have yet.
It also adds the check to commands that override run() but not __call__,
such as `ipa ping`, and to commands run on the server. Adjust tests
for these changes.
https://fedorahosted.org/freeipa/ticket/3963
Reviewed-By: Martin Kosek <mkosek@redhat.com>
Also return list of primary keys instead of a single unicode CSV value from
LDAPDelete-based commands.
This introduces a new capability 'primary_key_types' for backward
compatibility with old clients.
Reviewed-By: Tomas Babej <tbabej@redhat.com>
