Test prometheus build failure with custom kolla branch

Author: seunghun1ee

etc/kayobe/stackhpc.yml

@@ -141,7 +141,8 @@ stackhpc_repo_elrepo_9_version: "{{ stackhpc_repo_distribution }}"
 
 # Kolla source repository.
 stackhpc_kolla_source_url: "https://github.com/stackhpc/kolla"
-stackhpc_kolla_source_version: "stackhpc/{{ openstack_release }}"
+# stackhpc_kolla_source_version: "stackhpc/{{ openstack_release }}"
+stackhpc_kolla_source_version: "prometheus-build-test"
 
 # Kolla Ansible source repository.
 stackhpc_kolla_ansible_source_url: "https://github.com/stackhpc/kolla-ansible"