Update the branch-specific jobs (+v, +w, +x, -s, -t)

- victoria, wallaby and xena have been out for a while
  and need to be tested;
- stein and train are EM and other plugins dropped
  their testing;
- temporarily disable the ussuri job until the related
  bug is solved, otherwise no changes can be merged
  in any of the active branches. It may take a while
  for that to be solved, or the ussuri branch may move
  out of support before that (it's already EM).

Related-Bug: #1916750
Change-Id: I379fe59b2fbf4888edfa8e6dd6fe1478c6c06497

.zuul.yaml

@@ -4,15 +4,19 @@
     check:
       jobs:
         - devstack-plugin-nfs-tempest-full
-        - devstack-plugin-nfs-tempest-full-ussuri
-        - devstack-plugin-nfs-tempest-full-train
-        - devstack-plugin-nfs-tempest-full-stein
+        - devstack-plugin-nfs-tempest-full-xena
+        - devstack-plugin-nfs-tempest-full-wallaby
+        - devstack-plugin-nfs-tempest-full-victoria
+        # ussuri disabled due to https://bugs.launchpad.net/nova/+bug/1916750
+        - devstack-plugin-nfs-tempest-full-ussuri:
+           voting: no
     gate:
       jobs:
         - devstack-plugin-nfs-tempest-full
-        - devstack-plugin-nfs-tempest-full-ussuri
-        - devstack-plugin-nfs-tempest-full-train
-        - devstack-plugin-nfs-tempest-full-stein
+        - devstack-plugin-nfs-tempest-full-xena
+        - devstack-plugin-nfs-tempest-full-wallaby
+        - devstack-plugin-nfs-tempest-full-victoria
+        # - devstack-plugin-nfs-tempest-full-ussuri
 
 - job:
     name: devstack-plugin-nfs-tempest-full
@@ -68,20 +72,26 @@
     irrelevant-files: *gate-irrelevant-files
     branches: ^(?!stable/(ocata|pike|queens|rocky|stein|train)).*$
 
+- job:
+    name: devstack-plugin-nfs-tempest-full-xena
+    parent: devstack-plugin-nfs-tempest-full
+    nodeset: openstack-single-node-focal
+    override-checkout: stable/xena
+
+- job:
+    name: devstack-plugin-nfs-tempest-full-wallaby
+    parent: devstack-plugin-nfs-tempest-full
+    nodeset: openstack-single-node-focal
+    override-checkout: stable/wallaby
+
+- job:
+    name: devstack-plugin-nfs-tempest-full-victoria
+    parent: devstack-plugin-nfs-tempest-full
+    nodeset: openstack-single-node-focal
+    override-checkout: stable/victoria
+
 - job:
     name: devstack-plugin-nfs-tempest-full-ussuri
     parent: devstack-plugin-nfs-tempest-full
     nodeset: openstack-single-node-bionic
     override-checkout: stable/ussuri
-
-- job:
-    name: devstack-plugin-nfs-tempest-full-train
-    parent: devstack-plugin-nfs-tempest-full
-    nodeset: openstack-single-node-bionic
-    override-checkout: stable/train
-
-- job:
-    name: devstack-plugin-nfs-tempest-full-stein
-    parent: devstack-plugin-nfs-tempest-full
-    nodeset: openstack-single-node-bionic
-    override-checkout: stable/stein