[OVN] Remove check for external ports support

The field "ha_chassis_group" was added to the "Logical_Switch_Port"
table in [1], that was released in OVN v20.03.0. Neutron enforces
newer versions of OVN to work properly.

[1]b31c76000b

Related-Bug: #2125553
Signed-off-by: Rodolfo Alonso Hernandez <ralonsoh@redhat.com>
Change-Id: Iff2ebe33d5ca454e06b914313ca124c105c4dedb

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

@@ -1152,6 +1152,7 @@ class TestOVNMechanismDriver(TestOVNMechanismDriverBase):
                                  is_extport_present=False):
         port_device_owner = 'compute:nova' if is_compute_port else ''
         self.mech_driver._plugin.nova_notifier = mock.Mock()
+        mock_sync.return_value = mock.Mock(), mock.Mock()
         mock_is_ext.return_value = is_extport_present
         self.sb_ovn.get_extport_chassis_from_cms_options.return_value = [
             mock.Mock()]
@@ -1190,12 +1191,10 @@ class TestOVNMechanismDriver(TestOVNMechanismDriverBase):
             ulsp.assert_called_once_with(mock.ANY, mock.ANY)
 
             if is_extport_present:
-                # Method "sync_ha_chassis_group_network" called twice: when the
-                # port is created and when the port is set to UP.
-                calls = [mock.call(
+                sync_call = mock.call(
                     mock.ANY, self.nb_ovn, self.sb_ovn, port1['port']['id'],
-                    port1['port']['network_id'], mock.ANY)] * 2
-                mock_sync.assert_has_calls(calls)
+                    port1['port']['network_id'], mock.ANY)
+                mock_sync.assert_has_calls([sync_call, sync_call])
             else:
                 mock_sync.assert_not_called()
 

releasenotes/notes/ovn-external-ports-supported-5895ea9c22d0aa0c.yaml

@@ -0,0 +1,5 @@
+---
+other:
+  - |
+    It is assumed now that OVN supports external ports. This functionality
+    was added in OVN v20.03.0.