Enable unset ptr test and add inactive value to floating ip status

Depends-On: https://review.opendev.org/c/openstack/designate/+/830549

Change-Id: Iba915b4701037b5ab33c57550c5f3dcddf01ccbc
diff --git a/designate_tempest_plugin/tests/base.py b/designate_tempest_plugin/tests/base.py
index 2e02a8c..e251ac8 100644
--- a/designate_tempest_plugin/tests/base.py
+++ b/designate_tempest_plugin/tests/base.py
@@ -135,6 +135,10 @@
                               zone_id,
                               recordset_id)
 
+    def unset_ptr(self, ptr_client, fip_id, **kwargs):
+        return utils.call_and_ignore_notfound_exc(
+            ptr_client.unset_ptr_record, fip_id, **kwargs)
+
     def _delete_zone(self, zone_client, zone_id, **kwargs):
         return utils.call_and_ignore_notfound_exc(zone_client.delete_zone,
                                                   zone_id, **kwargs)