SSH: Ignore the default_domain_suffix
https://fedorahosted.org/sssd/ticket/2609
In a trust setup, hosts are normally only stored on the IPA server. The
default_domain_suffix option is only recommended for the IPA-AD trust
scenario as well. Therefore we should ignore this option in the SSH
provider.
Reviewed-by: Pavel Březina <pbrezina@redhat.com>
Reviewed-by: Jan Cholasta <jcholast@redhat.com>