fix(nova,neutron): Specify missing region name (#640)

Co-authored-by: Mohammed Naser <mnaser@vexxhost.com>
diff --git a/roles/nova/vars/main.yml b/roles/nova/vars/main.yml
index 98d5bb6..26fb282 100644
--- a/roles/nova/vars/main.yml
+++ b/roles/nova/vars/main.yml
@@ -60,6 +60,9 @@
         backend: oslo_cache.memcache_pool
       cinder:
         catalog_info: volumev3::internalURL
+        os_region_name: "{{ openstack_helm_endpoints_nova_region_name }}"
+        username: "nova-{{ openstack_helm_endpoints_nova_region_name }}"
+        password: "{{ openstack_helm_endpoints_nova_keystone_password }}"
       conductor:
         workers: 8
       compute: