Make explicit the network backend used in the CI jobs

All Neutron CI jobs (except for unit, functional and fullstack jobs),
have explicitly defined the network backend used:
- linuxbridge
- ovs
- ovn

That was discussed and approved during the Neutron CI meetings [1].

[1]https://meetings.opendev.org/meetings/neutron_ci/2021/neutron_ci.2021-06-15-15.00.log.html

Depends-On: https://review.opendev.org/c/openstack/neutron/+/797051
Change-Id: I4d18ef3e3adf24cf646e0546e7c38145f5a4aa92
diff --git a/zuul.d/project.yaml b/zuul.d/project.yaml
index c876579..7a3afc2 100644
--- a/zuul.d/project.yaml
+++ b/zuul.d/project.yaml
@@ -64,11 +64,11 @@
             irrelevant-files: *tempest-irrelevant-files
         - devstack-plugin-ceph-tempest-py3:
             irrelevant-files: *tempest-irrelevant-files
-        - neutron-grenade-multinode:
+        - neutron-ovs-grenade-multinode:
             irrelevant-files: *tempest-irrelevant-files
         - grenade:
             irrelevant-files: *tempest-irrelevant-files
-        - neutron-tempest-dvr:
+        - neutron-ovs-tempest-dvr:
             voting: false
             irrelevant-files: *tempest-irrelevant-files
         - interop-tempest-consistency:
@@ -85,7 +85,7 @@
       jobs:
         - tempest-slow-py3:
             irrelevant-files: *tempest-irrelevant-files
-        - neutron-grenade-multinode:
+        - neutron-ovs-grenade-multinode:
             irrelevant-files: *tempest-irrelevant-files
         - tempest-full-py3:
             irrelevant-files: *tempest-irrelevant-files
@@ -102,7 +102,7 @@
             irrelevant-files: *tempest-irrelevant-files
         - tempest-all:
             irrelevant-files: *tempest-irrelevant-files
-        - neutron-tempest-dvr-ha-multinode-full:
+        - neutron-ovs-tempest-dvr-ha-multinode-full:
             irrelevant-files: *tempest-irrelevant-files
         - nova-tempest-v2-api:
             irrelevant-files: *tempest-irrelevant-files