UM only: change wallaby and xena to use unmaintained/

Change-Id: I30002758a9bf42ece6e1565deb903913bf510af1
diff --git a/zuul.d/wallaby_jobs.yaml b/zuul.d/wallaby_jobs.yaml
index 8a771b8..48b56b2 100644
--- a/zuul.d/wallaby_jobs.yaml
+++ b/zuul.d/wallaby_jobs.yaml
@@ -2,7 +2,7 @@
     name: neutron-tempest-plugin-api-wallaby
     parent: neutron-tempest-plugin-base
     nodeset: openstack-single-node-focal
-    override-checkout: stable/wallaby
+    override-checkout: unmaintained/wallaby
     required-projects: &required-projects-wallaby
       - openstack/neutron
       - name: openstack/neutron-tempest-plugin
@@ -98,7 +98,7 @@
 - job:
     name: neutron-tempest-plugin-scenario-openvswitch-wallaby
     parent: neutron-tempest-plugin-openvswitch
-    override-checkout: stable/wallaby
+    override-checkout: unmaintained/wallaby
     required-projects: *required-projects-wallaby
     vars:
       tempest_test_regex: "\
@@ -118,7 +118,7 @@
 - job:
     name: neutron-tempest-plugin-scenario-openvswitch-iptables_hybrid-wallaby
     parent: neutron-tempest-plugin-openvswitch-iptables_hybrid
-    override-checkout: stable/wallaby
+    override-checkout: unmaintained/wallaby
     required-projects: *required-projects-wallaby
     vars:
       tempest_test_regex: "\
@@ -145,7 +145,7 @@
 - job:
     name: neutron-tempest-plugin-scenario-linuxbridge-wallaby
     parent: neutron-tempest-plugin-linuxbridge
-    override-checkout: stable/wallaby
+    override-checkout: unmaintained/wallaby
     required-projects: *required-projects-wallaby
     vars:
       tempest_test_regex: "\
@@ -165,7 +165,7 @@
 - job:
     name: neutron-tempest-plugin-scenario-ovn-wallaby
     parent: neutron-tempest-plugin-ovn
-    override-checkout: stable/wallaby
+    override-checkout: unmaintained/wallaby
     required-projects: *required-projects-wallaby
     vars:
       tempest_test_regex: "\
@@ -190,7 +190,7 @@
     name: neutron-tempest-plugin-dvr-multinode-scenario-wallaby
     parent: neutron-tempest-plugin-dvr-multinode-scenario
     nodeset: openstack-two-node-focal
-    override-checkout: stable/wallaby
+    override-checkout: unmaintained/wallaby
     required-projects: *required-projects-wallaby
     vars:
       network_api_extensions_common: *api_extensions
@@ -198,7 +198,7 @@
 - job:
     name: neutron-tempest-plugin-designate-scenario-wallaby
     parent: neutron-tempest-plugin-designate-scenario
-    override-checkout: stable/wallaby
+    override-checkout: unmaintained/wallaby
     required-projects:
       - openstack/neutron
       - name: openstack/neutron-tempest-plugin
@@ -213,7 +213,7 @@
     name: neutron-tempest-plugin-sfc-wallaby
     parent: neutron-tempest-plugin-sfc
     nodeset: openstack-single-node-focal
-    override-checkout: stable/wallaby
+    override-checkout: unmaintained/wallaby
     required-projects: *required-projects-wallaby
     vars:
       network_api_extensions_common: *api_extensions
@@ -222,7 +222,7 @@
     name: neutron-tempest-plugin-bgpvpn-bagpipe-wallaby
     parent: neutron-tempest-plugin-bgpvpn-bagpipe
     nodeset: openstack-single-node-focal
-    override-checkout: stable/wallaby
+    override-checkout: unmaintained/wallaby
     required-projects: *required-projects-wallaby
     vars:
       network_api_extensions: *api_extensions
@@ -231,7 +231,7 @@
     name: neutron-tempest-plugin-dynamic-routing-wallaby
     parent: neutron-tempest-plugin-dynamic-routing
     nodeset: openstack-single-node-focal
-    override-checkout: stable/wallaby
+    override-checkout: unmaintained/wallaby
     required-projects: *required-projects-wallaby
     vars:
       network_api_extensions_common: *api_extensions
@@ -240,7 +240,7 @@
     name: neutron-tempest-plugin-vpnaas-wallaby
     parent: neutron-tempest-plugin-vpnaas
     nodeset: openstack-single-node-focal
-    override-checkout: stable/wallaby
+    override-checkout: unmaintained/wallaby
     required-projects: *required-projects-wallaby
     vars:
       network_api_extensions_common: *api_extensions