Update gate jobs as per the 2025.1 cycle testing runtime

As per 2025.1 testing runtime[1], we need to test on Ubuntu
Noble (which will be taken care by depends-on tempest and devstack
patches to move base jobs to Noble) and at least single job to run on
Ubuntu Jammy (for smooth upgrade from previous releases).

This commit adds a new job to run on Jammy which can be removed
in the next cycle.

Depends-On: https://review.opendev.org/c/openstack/tempest/+/932156

[1] https://governance.openstack.org/tc/reference/runtimes/2025.1.html

Change-Id: Ib61dd6cc0bf58fed7a4861aa174129cfda4e130a

.zuul.yaml

@@ -60,6 +60,15 @@
     name: mistral-devstack
     parent: mistral-devstack-tempest-base
 
+
+# TODO(gmann): As per the 2025.1 testing runtime, we need to run at least
+# one job on jammy. This job can be removed in the next cycle(2025.2).
+- job:
+    name: mistral-devstack-jammy
+    description: This is integrated job testing on Ubuntu jammy(22.04)
+    parent: mistral-devstack
+    nodeset: openstack-single-node-jammy
+
 - job:
     name: mistral-devstack-kombu
     parent: mistral-devstack-tempest-base
@@ -82,6 +91,7 @@
     check:
       jobs:
         - mistral-devstack
+        - mistral-devstack-jammy
         - mistral-devstack-tempest-ipv6-only
         - mistral-devstack-non-apache-tempest-ipv6-only
         - mistral-devstack-non-apache:
@@ -92,6 +102,7 @@
     gate:
       jobs:
         - mistral-devstack
+        - mistral-devstack-jammy
         - mistral-devstack-tempest-ipv6-only
         - mistral-devstack-non-apache-tempest-ipv6-only
         - mistral-devstack-non-apache