Add functional testing for the v2 API quotas endpoint

This is disabled by default, I7a0b828824ad6f274d922748f5f9a68157cd939a
will enable it.

Change-Id: I06180a7402fc45940d4b312666cf2dfd33af1305
diff --git a/designate_tempest_plugin/config.py b/designate_tempest_plugin/config.py
index 5b99e81..e4e0270 100644
--- a/designate_tempest_plugin/config.py
+++ b/designate_tempest_plugin/config.py
@@ -71,4 +71,11 @@
     cfg.BoolOpt('api_v2_root_recordsets',
                 default=False,
                 help="Is the v2 root recordsets API enabled."),
+    cfg.BoolOpt('api_v2_quotas',
+                default=False,
+                help="Is the v2 quota API enabled."),
+    cfg.BoolOpt('bug_1573141_fixed',
+                default=False,
+                help="Is https://bugs.launchpad.net/designate/+bug/1573141 "
+                "fixed"),
 ]