Add support for <role>_ingress_class_name

Change-Id: I7b37dda12036e7a9e0ada33fdfe6d45511b0ee18
(cherry picked from commit c139abc1d338f923ab5d528460d2f4906b78e2e2)
diff --git a/roles/manila/tasks/main.yml b/roles/manila/tasks/main.yml
index b5f0dd9..ccf9c56 100644
--- a/roles/manila/tasks/main.yml
+++ b/roles/manila/tasks/main.yml
@@ -38,6 +38,7 @@
     openstack_helm_ingress_service_name: manila-api
     openstack_helm_ingress_service_port: 8786
     openstack_helm_ingress_annotations: "{{ manila_ingress_annotations }}"
+    openstack_helm_ingress_class_name: "{{ manila_ingress_class_name }}"
 
 - name: Update service tenant quotas
   openstack.cloud.quota: