ipatests: mark test_domain_resolution_order as expectedly failing

SSSD fix have not yet landed in Fedora 29 and below.
Relates to https://pagure.io/SSSD/sssd/issue/3957

Reviewed-By: Florence Blanc-Renaud <flo@redhat.com>

ipatests/test_integration/test_sudo.py

@@ -19,6 +19,7 @@
 
 import pytest
 
+from ipaplatform.osinfo import osinfo
 from ipatests.test_integration.base import IntegrationTest
 from ipatests.pytest_ipa.integration.tasks import (
     clear_sssd_cache, get_host_ip_with_hostmask, modify_sssd_conf)
@@ -714,6 +715,9 @@ class TestSudo(IntegrationTest):
                                           raiseonerr=False)
         assert result.returncode != 0
 
+    @pytest.mark.xfail(
+        osinfo.id == 'fedora' and osinfo.version_number < (30,),
+        reason="https://pagure.io/SSSD/sssd/issue/3957", strict=True)
     def test_domain_resolution_order(self):
         """Test sudo with runAsUser and domain resolution order.