fix: add lpfc role (#381)

* fix: enable volume_use_multipath by default

* fix: add lpfc tuning role
diff --git a/roles/nova/vars/main.yml b/roles/nova/vars/main.yml
index 820b12c..712242a 100644
--- a/roles/nova/vars/main.yml
+++ b/roles/nova/vars/main.yml
@@ -80,6 +80,8 @@
         max_instances_per_host: 200
       glance:
         enable_rbd_download: true
+      libvirt:
+        volume_use_multipath: true
       neutron:
         metadata_proxy_shared_secret: "{{ openstack_helm_endpoints['compute_metadata']['secret'] }}"
       oslo_messaging_notifications: