Exclude ``NetworkWritableMtuTest`` test class in ML2/OVN

E/W packet fragmentation is not supported in ML2/OVN [1].

[1]https://docs.openstack.org/neutron/latest/ovn/gaps.html

Closes-Bug: #2082344
Change-Id: Ieeed73b2a5fc8319b3c199cdd2888e0090139077
diff --git a/zuul.d/zed_jobs.yaml b/zuul.d/zed_jobs.yaml
index 92c43c7..e2bdb50 100644
--- a/zuul.d/zed_jobs.yaml
+++ b/zuul.d/zed_jobs.yaml
@@ -187,11 +187,13 @@
           (^tempest.api.compute.servers.test_attach_interfaces)|\
           (^tempest.api.compute.servers.test_multiple_create)"
       # NOTE(ralonsoh): tests disabled because of https://bugs.launchpad.net/neutron/+bug/2082070
+      # NOTE(ralonsoh): ``NetworkWritableMtuTest`` excluded because of https://bugs.launchpad.net/neutron/+bug/2082344
       tempest_exclude_regex: "\
           (neutron_tempest_plugin.scenario.test_security_groups.StatelessNetworkSecGroupIPv4Test.test_connectivity_between_vms_using_different_sec_groups)|\
           (neutron_tempest_plugin.scenario.test_security_groups.StatelessNetworkSecGroupIPv4Test.test_packets_of_any_connection_state_can_reach_dest)|\
           (neutron_tempest_plugin.scenario.test_vlan_transparency.VlanTransparencyTest.test_vlan_transparent_allowed_address_pairs)|\
-          (neutron_tempest_plugin.scenario.test_vlan_transparency.VlanTransparencyTest.test_vlan_transparent_port_sec_disabled)"
+          (neutron_tempest_plugin.scenario.test_vlan_transparency.VlanTransparencyTest.test_vlan_transparent_port_sec_disabled)|\
+          (neutron_tempest_plugin.scenario.test_mtu.NetworkWritableMtuTest.*)"
       network_api_extensions: *api_extensions
       network_api_extensions_ovn:
         - vlan-transparent