Add galera-cluster-upgrade job template

  * recover autoadding upgrade_rabbitmq accidentaly removed by
    I24d5b65b92c3b3c22c710a21ed5a5306e7f3bc13

(cherry picked from commit 96a6c79abe803e89c4924e184b779aa7aec2c536)

Change-Id: Ibd72431c2e6f0bd91c94362377262371381d1796
Related-prod: PROD-29630
diff --git a/jenkins/client/job/deploy/update/init.yml b/jenkins/client/job/deploy/update/init.yml
index 8efaad7..6646365 100644
--- a/jenkins/client/job/deploy/update/init.yml
+++ b/jenkins/client/job/deploy/update/init.yml
@@ -5,6 +5,7 @@
   - system.jenkins.client.job.deploy.update.update_ceph
   - system.jenkins.client.job.deploy.update.upgrade
   - system.jenkins.client.job.deploy.update.upgrade_rabbitmq
+  - system.jenkins.client.job.deploy.update.upgrade_galera
   - system.jenkins.client.job.deploy.update.upgrade_compute
   - system.jenkins.client.job.deploy.update.upgrade_mcp_release
   - system.jenkins.client.job.deploy.update.upgrade_ovs_gateway