CI: Set previous_release for 2025.2 Flamingo

We also need to remove the RabbitMQ queue migration from the upgrade
jobs. The queues are already in the correct state when deployed on
2025.1 Epoxy and the migration script is absent from this release.

Change-Id: I79cb938017721588012d820b86740b7219be5cab

playbooks/kayobe-overcloud-upgrade-base/run.yml

@@ -83,17 +83,6 @@
             chdir: "{{ previous_kayobe_src_dir }}"
             executable: /bin/bash
 
-        # Migrate RabbitMQ queues.
-
-        - name: Ensure RabbitMQ queues are migrated
-          shell:
-            cmd: dev/rabbitmq-migrate-queues.sh ironic,keystone,neutron,nova &> {{ logs_dir }}/ansible/rabbitmq-migrate-queues
-            chdir: "{{ previous_kayobe_src_dir }}"
-            executable: /bin/bash
-          environment:
-            KAYOBE_CONFIG_SOURCE_PATH: "{{ previous_kayobe_config_src_dir }}"
-            KAYOBE_SOURCE_PATH: "{{ previous_kayobe_src_dir }}"
-
         # Upgrade Kayobe, and use it to perform an upgrade of the control plane.
 
         - name: Ensure overcloud is upgraded

zuul.d/jobs.yaml

@@ -105,7 +105,7 @@
       tenks_src_dir: "{{ ansible_env.PWD ~ '/' ~ zuul.projects['opendev.org/openstack/tenks'].src_dir }}"
       is_upgrade: "{{ 'upgrade' in zuul.job }}"
       is_slurp: "{{ 'slurp' in zuul.job }}"
-      previous_release: "{{ '2024.1' if is_slurp else '2024.2' }}"
+      previous_release: "{{ '2025.1' if is_slurp else '2025.1' }}"
       tls_enabled: false
       container_engine: 'docker'
       ironic_boot_mode: "bios"