Add test cinder_cluster_name for CI

Author: seunghun1ee

etc/kayobe/environments/ci-multinode/kolla/globals.yml

@@ -67,3 +67,6 @@ designate_forwarders_addresses: "1.1.1.1; 8.8.8.8"
 # Open up ports in firewalld for services on the public API network.
 enable_external_api_firewalld: true
 external_api_firewalld_zone: "{{ public_net_name | net_zone }}"
+
+# Test cinder cluster
+cinder_cluster_name: "stackhpc_test_cinder_cluster"