CI: Add job for v1.27 and stop running label-less

Change-Id: I0c02835d7761b4f42ded5be7729d24617b0432de

.zuul.yaml

@@ -9,7 +9,7 @@
         - magnum-tempest-plugin-tests-api-rbac
         - magnum-tempest-plugin-tests-api-2023-1
         - magnum-tempest-plugin-tests-api-zed
-        - magnum-tempest-plugin-tests-cluster-k8s_fcos_v1
+        - magnum-tempest-plugin-tests-cluster-k8s_fcos_v1-v1.27
     gate:
       jobs:
         - magnum-tempest-plugin-tests-api
@@ -39,6 +39,25 @@
             enforce_scope:
               magnum: true
 
+- job:
+    name: magnum-tempest-plugin-tests-cluster-k8s_fcos_v1-v1.27
+    parent: magnum-tempest-plugin-tests-cluster-k8s_fcos_v1
+    vars:
+      devstack_local_config:
+        test-config:
+          $TEMPEST_CONFIG:
+            labels:
+              kube_tag: v1.27.8-rancher2
+              container_runtime: containerd
+              containerd_version: 1.6.28
+              containerd_tarball_sha256: f70736e52d61e5ad225f4fd21643b5ca1220013ab8b6c380434caeefb572da9b
+              cloud_provider_tag: v1.27.3
+              cinder_csi_plugin_tag: v1.27.3
+              k8s_keystone_auth_tag: v1.27.3
+              magnum_auto_healer_tag: v1.27.3
+              octavia_ingress_controller_tag: v1.27.3
+              calico_tag: v3.26.4
+
 - job:
     name: magnum-tempest-plugin-tests-cluster-k8s_fcos_v1
     parent: magnum-tempest-plugin-tests-cluster