Add stable/victoria job

Add job testing stable tempest plugin with latest stable branch as we're
supposed to work fine with all previous versions. Also clean up older
job definitions as some fixes got backported to those branches.

Change-Id: I37a74cd11187c48931cf8e306ae2c58e8c3bfb18

.zuul.yaml

@@ -20,18 +20,21 @@
       - kuryr-kubernetes-tempest-jobs
     check:
       jobs:
+        - kuryr-kubernetes-tempest-victoria
         - kuryr-kubernetes-tempest-ussuri
         - kuryr-kubernetes-tempest-train
         - kuryr-kubernetes-tempest-stein
 
+- job:
+    name: kuryr-kubernetes-tempest-victoria
+    parent: kuryr-kubernetes-tempest
+    override-checkout: stable/victoria
+
 - job:
     name: kuryr-kubernetes-tempest-ussuri
     parent: kuryr-kubernetes-tempest
     override-checkout: stable/ussuri
     nodeset: openstack-single-node-bionic
-    vars:
-      # Default swap size got shrinked to 1 GB, it's way too small for us.
-      configure_swap_size: 8192
 
 - job:
     name: kuryr-kubernetes-tempest-train
@@ -42,8 +45,6 @@
     - name: openstack/diskimage-builder
       override-checkout: 2.30.0
     vars:
-      # Default swap size got shrinked to 1 GB, it's way too small for us.
-      configure_swap_size: 8192
       devstack_localrc:
         USE_PYTHON3: True
 
@@ -56,7 +57,5 @@
     - name: openstack/diskimage-builder
       override-checkout: 2.30.0
     vars:
-      # Default swap size got shrinked to 1 GB, it's way too small for us.
-      configure_swap_size: 8192
       devstack_localrc:
         USE_PYTHON3: True