[functional tests] compatibility with ovsdbapp>=2.2.2

ovsdbapp>=2.2.2 handles cleanup of Chassis_Private record
with chassis delete so we don't need explicit delete.
The compatibility part can be dropped when we update
requirements.txt to ovsdbapp>=2.2.2.

Closes-Bug: #2066263
Change-Id: I45c6e6a1c3536cf4f2d90b01a3577eec9eaf3743
(cherry picked from commit 20b9893)
(cherry picked from commit 4221f70)
(cherry picked from commit d1c5eac)
Conflicts: neutron/tests/functional/base.py

Author: karelyatin

neutron/tests/functional/base.py

@@ -31,6 +31,7 @@
 from oslo_log import log
 from oslo_utils import timeutils
 from oslo_utils import uuidutils
+from ovsdbapp.backend.ovs_idl import idlutils
 
 from neutron.agent.linux import utils
 from neutron.api import extensions as exts
@@ -473,6 +474,13 @@ def append_cms_options(ext_ids, value):
     def del_fake_chassis(self, chassis, if_exists=True):
         self.sb_api.chassis_del(
             chassis, if_exists=if_exists).execute(check_error=True)
-        if self.sb_api.is_table_present('Chassis_Private'):
-            self.sb_api.db_destroy(
-                'Chassis_Private', chassis).execute(check_error=True)
+        try:
+            if self.sb_api.is_table_present('Chassis_Private'):
+                self.sb_api.db_destroy(
+                    'Chassis_Private', chassis).execute(check_error=True)
+        except idlutils.RowNotFound:
+            # NOTE(ykarel ): ovsdbapp >= 2.2.2 handles Chassis_Private
+            # record delete with chassis
+            # try/except can be dropped when neutron requirements.txt
+            # include ovsdbapp>=2.2.2
+            pass

neutron/tests/functional/plugins/ml2/drivers/ovn/mech_driver/test_mech_driver.py

@@ -1215,7 +1215,8 @@ def test_agent_list(self):
         # then Chassis_Private.chassis = []; both metadata and controller
         # agents will still be present in the agent list.
         agent_event = AgentWaitEvent(self.mech_driver, [self.chassis],
-                                     events=(event.RowEvent.ROW_UPDATE,))
+                                     events=(event.RowEvent.ROW_UPDATE,
+                                             event.RowEvent.ROW_DELETE,))
         self.sb_api.idl.notify_handler.watch_event(agent_event)
         self.sb_api.chassis_del(self.chassis).execute(check_error=True)
         self.assertTrue(agent_event.wait())