CI: Add Multinode Cinder cluster name

Author: Alex-Welsh

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

@@ -67,3 +67,7 @@ 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 }}"
+
+# Cinder cluster must have a name defined
+cinder_cluster_name: multinode-cinder
+