[PS-274] Set rbac_service_role_elevated_access to true (#1898)

See https://review.opendev.org/c/openstack/ironic/+/907148
diff --git a/roles/ironic/vars/main.yml b/roles/ironic/vars/main.yml
index a965b1b..51d32b4 100644
--- a/roles/ironic/vars/main.yml
+++ b/roles/ironic/vars/main.yml
@@ -47,6 +47,7 @@
         log_config_append: null
         enabled_network_interfaces: flat,neutron
         default_network_interface: flat
+        rbac_service_role_elevated_access: true
       conductor:
         clean_step_priority_override: deploy.erase_devices_express:5
         deploy_kernel: "{{ ironic_python_agent_deploy_kernel.openstack_image.id }}"