Bagpipe: make `neutron-tempest-plugin-bgpvpn-bagpipe` non-voting

With the LinuxBridge driver removal bagpipe related jobs are
failing, till it is fixed make the job non-voting on master.

This patch also makes ``neutron-tempest-plugin-dynamic-routing`` as
non-voting to unblock the CI. That will be reverted once [1] is
merged.

This patch is also defining the ``neutron-tempest-plugin-vpnaas-ovn``
mechanism driver as "ovn". By default, devstack uses "ovn,logger".
This change is aligned with [2][3].

[1]https://review.opendev.org/c/openstack/neutron/+/941202
[2]https://review.opendev.org/c/openstack/neutron/+/941211
[3]https://review.opendev.org/c/openstack/neutron-tempest-plugin/+/941212

Related-Bug: #2097367
Change-Id: I2ee5fe46864e0215ca85ed5a585e33aed835c2c3

zuul.d/master_jobs.yaml

@@ -1529,6 +1529,7 @@
       devstack_localrc:
         IPSEC_PACKAGE: strongswan
         NETWORK_API_EXTENSIONS: "{{ (network_api_extensions_common + network_api_extensions_vpnaas) | join(',') }}"
+        Q_ML2_PLUGIN_MECHANISM_DRIVERS: ovn
       devstack_services:
         q-ovn-vpn-agent: true
       devstack_local_conf:

zuul.d/project.yaml

@@ -214,11 +214,21 @@
         - neutron-tempest-plugin-sfc-2023-2
         - neutron-tempest-plugin-sfc-2024-1
         - neutron-tempest-plugin-sfc-2024-2
-        - neutron-tempest-plugin-bgpvpn-bagpipe
+        - neutron-tempest-plugin-bgpvpn-bagpipe:
+            # TODO(lajoskatona) make job voting again once bug
+            # https://bugs.launchpad.net/neutron/+bug/2097367 will be fixed
+            voting: false
         - neutron-tempest-plugin-bgpvpn-bagpipe-2023-2
         - neutron-tempest-plugin-bgpvpn-bagpipe-2024-1
         - neutron-tempest-plugin-bgpvpn-bagpipe-2024-2
-        - neutron-tempest-plugin-dynamic-routing
+        - neutron-tempest-plugin-dynamic-routing:
+            # TODO(ralonsoh): this job is temporarily disabled; it will be
+            # restored once [1] is merged. This patch has been successfully
+            # tested in [2]. This job is removed from the gate queue,
+            # thus **remember to restore it in this queue too**.
+            # [1]https://review.opendev.org/c/openstack/neutron/+/941202
+            # [2]https://review.opendev.org/c/openstack/neutron-tempest-plugin/+/940906
+            voting: false
         - neutron-tempest-plugin-dynamic-routing-2023-2
         - neutron-tempest-plugin-dynamic-routing-2024-1
         - neutron-tempest-plugin-dynamic-routing-2024-2
@@ -239,7 +249,5 @@
     gate:
       jobs:
         - neutron-tempest-plugin-sfc
-        - neutron-tempest-plugin-bgpvpn-bagpipe
-        - neutron-tempest-plugin-dynamic-routing
         - neutron-tempest-plugin-fwaas
         - neutron-tempest-plugin-vpnaas-ovn