Add stable/2023.1 jobs on master gate

As 2023.1 is released, we should add its job on master
gate to keep branchless tempest plugins compatible
to stable branch.

Ref: Tempest plugins guide for stable branch testing:
- https://docs.openstack.org/tempest/latest/stable_branch_testing_policy.html

Change-Id: I5b43a1a3061367a2d49b2d8dc10a06da6742bdaf

.zuul.yaml

@@ -8,6 +8,7 @@
       jobs:
         - blazar-tempest-plugin-base
         - blazar-tempest-plugin-ipv6-only
+        - blazar-tempest-plugin-2023-1
         - blazar-tempest-plugin-zed
         - blazar-tempest-plugin-yoga
         - blazar-tempest-plugin-xena
@@ -64,6 +65,12 @@
       - ^doc/.*$
       - ^releasenotes/.*$
 
+- job:
+    name: blazar-tempest-plugin-2023-1
+    parent: blazar-tempest-plugin-base
+    nodeset: openstack-single-node-jammy
+    override-checkout: stable/2023.1
+
 - job:
     name: blazar-tempest-plugin-zed
     parent: blazar-tempest-plugin-base